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Finding the Fourth Proportional to 523,930.80, 785,896.20 and 129,946.80

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Solution

The fourth proportional to 523,930.80, 785,896.20 and 129,946.80 is: 194,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,930.80 : 785,896.20 = 129,946.80 : x
  2. Step 2: Convert to fraction form
    523,930.80/785,896.20 = 129,946.80/x
  3. Step 3: Cross multiply
    523,930.80x = 785,896.20 × 129,946.80
  4. Step 4: Simplify right side
    523,930.80x = 102,124,696,322.16
  5. Step 5: Solve for x
    x = 102,124,696,322.16/523,930.80
  6. Step 6: Final answer
    x = 194,920.20

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.