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Finding the Fourth Proportional to 399,549.43, 551,394.98 and 229,783.69

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Solution

The fourth proportional to 399,549.43, 551,394.98 and 229,783.69 is: 317,111.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,549.43 : 551,394.98 = 229,783.69 : x
  2. Step 2: Convert to fraction form
    399,549.43/551,394.98 = 229,783.69/x
  3. Step 3: Cross multiply
    399,549.43x = 551,394.98 × 229,783.69
  4. Step 4: Simplify right side
    399,549.43x = 126,701,573,151.88
  5. Step 5: Solve for x
    x = 126,701,573,151.88/399,549.43
  6. Step 6: Final answer
    x = 317,111.13

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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.