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Finding the Fourth Proportional to 501,508.78, 752,268.04 and 127,531.78

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Solution

The fourth proportional to 501,508.78, 752,268.04 and 127,531.78 is: 191,298.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,508.78 : 752,268.04 = 127,531.78 : x
  2. Step 2: Convert to fraction form
    501,508.78/752,268.04 = 127,531.78/x
  3. Step 3: Cross multiply
    501,508.78x = 752,268.04 × 127,531.78
  4. Step 4: Simplify right side
    501,508.78x = 95,938,082,178.31
  5. Step 5: Solve for x
    x = 95,938,082,178.31/501,508.78
  6. Step 6: Final answer
    x = 191,298.91

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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.