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Finding the Fourth Proportional to 424,071.43, 636,105.87 and 171,348.94

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Solution

The fourth proportional to 424,071.43, 636,105.87 and 171,348.94 is: 257,022.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,071.43 : 636,105.87 = 171,348.94 : x
  2. Step 2: Convert to fraction form
    424,071.43/636,105.87 = 171,348.94/x
  3. Step 3: Cross multiply
    424,071.43x = 636,105.87 × 171,348.94
  4. Step 4: Simplify right side
    424,071.43x = 108,996,066,552.28
  5. Step 5: Solve for x
    x = 108,996,066,552.28/424,071.43
  6. Step 6: Final answer
    x = 257,022.89

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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.