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Finding the Fourth Proportional to 415,351.38, 623,027.01 and 99,808.29

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Solution

The fourth proportional to 415,351.38, 623,027.01 and 99,808.29 is: 149,712.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,351.38 : 623,027.01 = 99,808.29 : x
  2. Step 2: Convert to fraction form
    415,351.38/623,027.01 = 99,808.29/x
  3. Step 3: Cross multiply
    415,351.38x = 623,027.01 × 99,808.29
  4. Step 4: Simplify right side
    415,351.38x = 62,183,260,491.91
  5. Step 5: Solve for x
    x = 62,183,260,491.91/415,351.38
  6. Step 6: Final answer
    x = 149,712.42

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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.