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Finding the Fourth Proportional to 438,898.83, 658,348.19 and 123,355.72

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Solution

The fourth proportional to 438,898.83, 658,348.19 and 123,355.72 is: 185,033.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,898.83 : 658,348.19 = 123,355.72 : x
  2. Step 2: Convert to fraction form
    438,898.83/658,348.19 = 123,355.72/x
  3. Step 3: Cross multiply
    438,898.83x = 658,348.19 × 123,355.72
  4. Step 4: Simplify right side
    438,898.83x = 81,211,014,988.15
  5. Step 5: Solve for x
    x = 81,211,014,988.15/438,898.83
  6. Step 6: Final answer
    x = 185,033.56

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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.