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Finding the Fourth Proportional to 251,806.07, 377,709.15 and 83,281.18

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Solution

The fourth proportional to 251,806.07, 377,709.15 and 83,281.18 is: 124,921.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,806.07 : 377,709.15 = 83,281.18 : x
  2. Step 2: Convert to fraction form
    251,806.07/377,709.15 = 83,281.18/x
  3. Step 3: Cross multiply
    251,806.07x = 377,709.15 × 83,281.18
  4. Step 4: Simplify right side
    251,806.07x = 31,456,063,708.80
  5. Step 5: Solve for x
    x = 31,456,063,708.80/251,806.07
  6. Step 6: Final answer
    x = 124,921.78

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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.