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Finding the Fourth Proportional to 220,257.64, 303,929.72 and 129,593.64

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Solution

The fourth proportional to 220,257.64, 303,929.72 and 129,593.64 is: 178,824.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,257.64 : 303,929.72 = 129,593.64 : x
  2. Step 2: Convert to fraction form
    220,257.64/303,929.72 = 129,593.64/x
  3. Step 3: Cross multiply
    220,257.64x = 303,929.72 × 129,593.64
  4. Step 4: Simplify right side
    220,257.64x = 39,387,358,718.98
  5. Step 5: Solve for x
    x = 39,387,358,718.98/220,257.64
  6. Step 6: Final answer
    x = 178,824.03

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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.