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Finding the Fourth Proportional to 429,765.74, 644,247.83 and 145,257.29

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Solution

The fourth proportional to 429,765.74, 644,247.83 and 145,257.29 is: 217,750.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,765.74 : 644,247.83 = 145,257.29 : x
  2. Step 2: Convert to fraction form
    429,765.74/644,247.83 = 145,257.29/x
  3. Step 3: Cross multiply
    429,765.74x = 644,247.83 × 145,257.29
  4. Step 4: Simplify right side
    429,765.74x = 93,581,691,016.08
  5. Step 5: Solve for x
    x = 93,581,691,016.08/429,765.74
  6. Step 6: Final answer
    x = 217,750.47

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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.