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Finding the Fourth Proportional to 225,345.88, 310,981.50 and 129,836.44

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Solution

The fourth proportional to 225,345.88, 310,981.50 and 129,836.44 is: 179,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,345.88 : 310,981.50 = 129,836.44 : x
  2. Step 2: Convert to fraction form
    225,345.88/310,981.50 = 129,836.44/x
  3. Step 3: Cross multiply
    225,345.88x = 310,981.50 × 129,836.44
  4. Step 4: Simplify right side
    225,345.88x = 40,376,730,865.86
  5. Step 5: Solve for x
    x = 40,376,730,865.86/225,345.88
  6. Step 6: Final answer
    x = 179,176.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.