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Finding the Fourth Proportional to 543,722.40, 815,194.80 and 243,957.60

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Solution

The fourth proportional to 543,722.40, 815,194.80 and 243,957.60 is: 365,761.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,722.40 : 815,194.80 = 243,957.60 : x
  2. Step 2: Convert to fraction form
    543,722.40/815,194.80 = 243,957.60/x
  3. Step 3: Cross multiply
    543,722.40x = 815,194.80 × 243,957.60
  4. Step 4: Simplify right side
    543,722.40x = 198,872,966,940.48
  5. Step 5: Solve for x
    x = 198,872,966,940.48/543,722.40
  6. Step 6: Final answer
    x = 365,761.95

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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.