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Finding the Fourth Proportional to 479,263.10, 718,996.71 and 142,304.72

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Solution

The fourth proportional to 479,263.10, 718,996.71 and 142,304.72 is: 213,487.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,263.10 : 718,996.71 = 142,304.72 : x
  2. Step 2: Convert to fraction form
    479,263.10/718,996.71 = 142,304.72/x
  3. Step 3: Cross multiply
    479,263.10x = 718,996.71 × 142,304.72
  4. Step 4: Simplify right side
    479,263.10x = 102,316,625,497.47
  5. Step 5: Solve for x
    x = 102,316,625,497.47/479,263.10
  6. Step 6: Final answer
    x = 213,487.38

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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.