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Finding the Fourth Proportional to 658,508.40, 987,805.80 and 185,209.20

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Solution

The fourth proportional to 658,508.40, 987,805.80 and 185,209.20 is: 277,825.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,508.40 : 987,805.80 = 185,209.20 : x
  2. Step 2: Convert to fraction form
    658,508.40/987,805.80 = 185,209.20/x
  3. Step 3: Cross multiply
    658,508.40x = 987,805.80 × 185,209.20
  4. Step 4: Simplify right side
    658,508.40x = 182,950,721,973.36
  5. Step 5: Solve for x
    x = 182,950,721,973.36/658,508.40
  6. Step 6: Final answer
    x = 277,825.95

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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.