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Finding the Fourth Proportional to 511,360.71, 766,967.19 and 156,279.39

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Solution

The fourth proportional to 511,360.71, 766,967.19 and 156,279.39 is: 234,396.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,360.71 : 766,967.19 = 156,279.39 : x
  2. Step 2: Convert to fraction form
    511,360.71/766,967.19 = 156,279.39/x
  3. Step 3: Cross multiply
    511,360.71x = 766,967.19 × 156,279.39
  4. Step 4: Simplify right side
    511,360.71x = 119,861,164,603.21
  5. Step 5: Solve for x
    x = 119,861,164,603.21/511,360.71
  6. Step 6: Final answer
    x = 234,396.51

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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.