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Finding the Fourth Proportional to 308,127.78, 425,177.26 and 180,756.90

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Solution

The fourth proportional to 308,127.78, 425,177.26 and 180,756.90 is: 249,421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,127.78 : 425,177.26 = 180,756.90 : x
  2. Step 2: Convert to fraction form
    308,127.78/425,177.26 = 180,756.90/x
  3. Step 3: Cross multiply
    308,127.78x = 425,177.26 × 180,756.90
  4. Step 4: Simplify right side
    308,127.78x = 76,853,723,468.09
  5. Step 5: Solve for x
    x = 76,853,723,468.09/308,127.78
  6. Step 6: Final answer
    x = 249,421.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.