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Finding the Fourth Proportional to 399,522.53, 551,357.55 and 229,756.66

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Solution

The fourth proportional to 399,522.53, 551,357.55 and 229,756.66 is: 317,073.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,522.53 : 551,357.55 = 229,756.66 : x
  2. Step 2: Convert to fraction form
    399,522.53/551,357.55 = 229,756.66/x
  3. Step 3: Cross multiply
    399,522.53x = 551,357.55 × 229,756.66
  4. Step 4: Simplify right side
    399,522.53x = 126,678,069,153.78
  5. Step 5: Solve for x
    x = 126,678,069,153.78/399,522.53
  6. Step 6: Final answer
    x = 317,073.66

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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.