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Finding the Fourth Proportional to 479,073.97, 718,488.24 and 142,035.85

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Solution

The fourth proportional to 479,073.97, 718,488.24 and 142,035.85 is: 213,017.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,073.97 : 718,488.24 = 142,035.85 : x
  2. Step 2: Convert to fraction form
    479,073.97/718,488.24 = 142,035.85/x
  3. Step 3: Cross multiply
    479,073.97x = 718,488.24 × 142,035.85
  4. Step 4: Simplify right side
    479,073.97x = 102,051,087,883.40
  5. Step 5: Solve for x
    x = 102,051,087,883.40/479,073.97
  6. Step 6: Final answer
    x = 213,017.39

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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.