Home / 280,943,838,832.21-387,702,784,522.86-152,485,313,932.86

Finding the Fourth Proportional to 280,943,838,832.21, 387,702,784,522.86 and 152,485,313,932.86

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Solution

The fourth proportional to 280,943,838,832.21, 387,702,784,522.86 and 152,485,313,932.86 is: 210,429,888,964.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,943,838,832.21 : 387,702,784,522.86 = 152,485,313,932.86 : x
  2. Step 2: Convert to fraction form
    280,943,838,832.21/387,702,784,522.86 = 152,485,313,932.86/x
  3. Step 3: Cross multiply
    280,943,838,832.21x = 387,702,784,522.86 × 152,485,313,932.86
  4. Step 4: Simplify right side
    280,943,838,832.21x = 59,118,980,810,612,274,102,272
  5. Step 5: Solve for x
    x = 59,118,980,810,612,274,102,272/280,943,838,832.21
  6. Step 6: Final answer
    x = 210,429,888,964.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.