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Finding the Fourth Proportional to 230,592.38, 318,217.49 and 129,990.38

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Solution

The fourth proportional to 230,592.38, 318,217.49 and 129,990.38 is: 179,386.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,592.38 : 318,217.49 = 129,990.38 : x
  2. Step 2: Convert to fraction form
    230,592.38/318,217.49 = 129,990.38/x
  3. Step 3: Cross multiply
    230,592.38x = 318,217.49 × 129,990.38
  4. Step 4: Simplify right side
    230,592.38x = 41,365,210,206.71
  5. Step 5: Solve for x
    x = 41,365,210,206.71/230,592.38
  6. Step 6: Final answer
    x = 179,386.72

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Double scale
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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.