Home / 429,200.13-643,915.01-148,717.38

Finding the Fourth Proportional to 429,200.13, 643,915.01 and 148,717.38

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Solution

The fourth proportional to 429,200.13, 643,915.01 and 148,717.38 is: 223,115.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,200.13 : 643,915.01 = 148,717.38 : x
  2. Step 2: Convert to fraction form
    429,200.13/643,915.01 = 148,717.38/x
  3. Step 3: Cross multiply
    429,200.13x = 643,915.01 × 148,717.38
  4. Step 4: Simplify right side
    429,200.13x = 95,761,353,229.87
  5. Step 5: Solve for x
    x = 95,761,353,229.87/429,200.13
  6. Step 6: Final answer
    x = 223,115.85

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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.