Home / 280,852.08-387,522.24-159,990.72

Finding the Fourth Proportional to 280,852.08, 387,522.24 and 159,990.72

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Solution

The fourth proportional to 280,852.08, 387,522.24 and 159,990.72 is: 220,756.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,852.08 : 387,522.24 = 159,990.72 : x
  2. Step 2: Convert to fraction form
    280,852.08/387,522.24 = 159,990.72/x
  3. Step 3: Cross multiply
    280,852.08x = 387,522.24 × 159,990.72
  4. Step 4: Simplify right side
    280,852.08x = 61,999,962,193.61
  5. Step 5: Solve for x
    x = 61,999,962,193.61/280,852.08
  6. Step 6: Final answer
    x = 220,756.64

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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.