Home / 429,279.06-643,711.22-251,843.70

Finding the Fourth Proportional to 429,279.06, 643,711.22 and 251,843.70

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Solution

The fourth proportional to 429,279.06, 643,711.22 and 251,843.70 is: 377,643.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,279.06 : 643,711.22 = 251,843.70 : x
  2. Step 2: Convert to fraction form
    429,279.06/643,711.22 = 251,843.70/x
  3. Step 3: Cross multiply
    429,279.06x = 643,711.22 × 251,843.70
  4. Step 4: Simplify right side
    429,279.06x = 162,114,615,376.31
  5. Step 5: Solve for x
    x = 162,114,615,376.31/429,279.06
  6. Step 6: Final answer
    x = 377,643.89

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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.