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Finding the Fourth Proportional to 249,989.73, 375,023.70 and 81,470.90

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Solution

The fourth proportional to 249,989.73, 375,023.70 and 81,470.90 is: 122,219.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,989.73 : 375,023.70 = 81,470.90 : x
  2. Step 2: Convert to fraction form
    249,989.73/375,023.70 = 81,470.90/x
  3. Step 3: Cross multiply
    249,989.73x = 375,023.70 × 81,470.90
  4. Step 4: Simplify right side
    249,989.73x = 30,553,516,485.21
  5. Step 5: Solve for x
    x = 30,553,516,485.21/249,989.73
  6. Step 6: Final answer
    x = 122,219.09

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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.