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Finding the Fourth Proportional to 429,638.89, 644,754.18 and 149,156.14

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Solution

The fourth proportional to 429,638.89, 644,754.18 and 149,156.14 is: 223,836.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,638.89 : 644,754.18 = 149,156.14 : x
  2. Step 2: Convert to fraction form
    429,638.89/644,754.18 = 149,156.14/x
  3. Step 3: Cross multiply
    429,638.89x = 644,754.18 × 149,156.14
  4. Step 4: Simplify right side
    429,638.89x = 96,169,044,737.67
  5. Step 5: Solve for x
    x = 96,169,044,737.67/429,638.89
  6. Step 6: Final answer
    x = 223,836.92

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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.