Home / 429,272.13-643,908.20-148,789.38

Finding the Fourth Proportional to 429,272.13, 643,908.20 and 148,789.38

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Solution

The fourth proportional to 429,272.13, 643,908.20 and 148,789.38 is: 223,184.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,272.13 : 643,908.20 = 148,789.38 : x
  2. Step 2: Convert to fraction form
    429,272.13/643,908.20 = 148,789.38/x
  3. Step 3: Cross multiply
    429,272.13x = 643,908.20 × 148,789.38
  4. Step 4: Simplify right side
    429,272.13x = 95,806,701,854.92
  5. Step 5: Solve for x
    x = 95,806,701,854.92/429,272.13
  6. Step 6: Final answer
    x = 223,184.07

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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.