Home / 399,561.20-551,411.18-229,795.44

Finding the Fourth Proportional to 399,561.20, 551,411.18 and 229,795.44

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Solution

The fourth proportional to 399,561.20, 551,411.18 and 229,795.44 is: 317,127.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,561.20 : 551,411.18 = 229,795.44 : x
  2. Step 2: Convert to fraction form
    399,561.20/551,411.18 = 229,795.44/x
  3. Step 3: Cross multiply
    399,561.20x = 551,411.18 × 229,795.44
  4. Step 4: Simplify right side
    399,561.20x = 126,711,774,729.02
  5. Step 5: Solve for x
    x = 126,711,774,729.02/399,561.20
  6. Step 6: Final answer
    x = 317,127.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.