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Finding the Fourth Proportional to 308,287.77, 425,433.92 and 180,938.76

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Solution

The fourth proportional to 308,287.77, 425,433.92 and 180,938.76 is: 249,693.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,287.77 : 425,433.92 = 180,938.76 : x
  2. Step 2: Convert to fraction form
    308,287.77/425,433.92 = 180,938.76/x
  3. Step 3: Cross multiply
    308,287.77x = 425,433.92 × 180,938.76
  4. Step 4: Simplify right side
    308,287.77x = 76,977,485,042.05
  5. Step 5: Solve for x
    x = 76,977,485,042.05/308,287.77
  6. Step 6: Final answer
    x = 249,693.61

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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.