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Finding the Fourth Proportional to 267,132.78, 400,636.26 and 77,543.10

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Solution

The fourth proportional to 267,132.78, 400,636.26 and 77,543.10 is: 116,296.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,132.78 : 400,636.26 = 77,543.10 : x
  2. Step 2: Convert to fraction form
    267,132.78/400,636.26 = 77,543.10/x
  3. Step 3: Cross multiply
    267,132.78x = 400,636.26 × 77,543.10
  4. Step 4: Simplify right side
    267,132.78x = 31,066,577,572.81
  5. Step 5: Solve for x
    x = 31,066,577,572.81/267,132.78
  6. Step 6: Final answer
    x = 116,296.39

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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.