Home / 280,760.32-387,450.24-153,435.88

Finding the Fourth Proportional to 280,760.32, 387,450.24 and 153,435.88

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Solution

The fourth proportional to 280,760.32, 387,450.24 and 153,435.88 is: 211,742.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,760.32 : 387,450.24 = 153,435.88 : x
  2. Step 2: Convert to fraction form
    280,760.32/387,450.24 = 153,435.88/x
  3. Step 3: Cross multiply
    280,760.32x = 387,450.24 × 153,435.88
  4. Step 4: Simplify right side
    280,760.32x = 59,448,768,530.61
  5. Step 5: Solve for x
    x = 59,448,768,530.61/280,760.32
  6. Step 6: Final answer
    x = 211,742.06

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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.