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Finding the Fourth Proportional to 399,504.76, 551,332.78 and 229,738.88

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Solution

The fourth proportional to 399,504.76, 551,332.78 and 229,738.88 is: 317,048.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,504.76 : 551,332.78 = 229,738.88 : x
  2. Step 2: Convert to fraction form
    399,504.76/551,332.78 = 229,738.88/x
  3. Step 3: Cross multiply
    399,504.76x = 551,332.78 × 229,738.88
  4. Step 4: Simplify right side
    399,504.76x = 126,662,576,188.47
  5. Step 5: Solve for x
    x = 126,662,576,188.47/399,504.76
  6. Step 6: Final answer
    x = 317,048.98

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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.