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Finding the Fourth Proportional to 429,618.28, 644,250.03 and 186,474.91

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Solution

The fourth proportional to 429,618.28, 644,250.03 and 186,474.91 is: 279,635.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,618.28 : 644,250.03 = 186,474.91 : x
  2. Step 2: Convert to fraction form
    429,618.28/644,250.03 = 186,474.91/x
  3. Step 3: Cross multiply
    429,618.28x = 644,250.03 × 186,474.91
  4. Step 4: Simplify right side
    429,618.28x = 120,136,466,361.75
  5. Step 5: Solve for x
    x = 120,136,466,361.75/429,618.28
  6. Step 6: Final answer
    x = 279,635.37

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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.