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Finding the Fourth Proportional to 402,316.38, 603,476.01 and 136,079.10

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Solution

The fourth proportional to 402,316.38, 603,476.01 and 136,079.10 is: 204,119.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,316.38 : 603,476.01 = 136,079.10 : x
  2. Step 2: Convert to fraction form
    402,316.38/603,476.01 = 136,079.10/x
  3. Step 3: Cross multiply
    402,316.38x = 603,476.01 × 136,079.10
  4. Step 4: Simplify right side
    402,316.38x = 82,120,472,312.39
  5. Step 5: Solve for x
    x = 82,120,472,312.39/402,316.38
  6. Step 6: Final answer
    x = 204,119.14

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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.