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Finding the Fourth Proportional to 479,675.73, 719,388.21 and 142,625.61

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Solution

The fourth proportional to 479,675.73, 719,388.21 and 142,625.61 is: 213,901.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,675.73 : 719,388.21 = 142,625.61 : x
  2. Step 2: Convert to fraction form
    479,675.73/719,388.21 = 142,625.61/x
  3. Step 3: Cross multiply
    479,675.73x = 719,388.21 × 142,625.61
  4. Step 4: Simplify right side
    479,675.73x = 102,603,182,278.06
  5. Step 5: Solve for x
    x = 102,603,182,278.06/479,675.73
  6. Step 6: Final answer
    x = 213,901.13

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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.