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Finding the Fourth Proportional to 485,203.66, 727,916.28 and 148,292.26

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Solution

The fourth proportional to 485,203.66, 727,916.28 and 148,292.26 is: 222,472.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,203.66 : 727,916.28 = 148,292.26 : x
  2. Step 2: Convert to fraction form
    485,203.66/727,916.28 = 148,292.26/x
  3. Step 3: Cross multiply
    485,203.66x = 727,916.28 × 148,292.26
  4. Step 4: Simplify right side
    485,203.66x = 107,944,350,251.99
  5. Step 5: Solve for x
    x = 107,944,350,251.99/485,203.66
  6. Step 6: Final answer
    x = 222,472.25

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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.