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Finding the Fourth Proportional to 252,444.35, 378,400.70 and 83,919.45

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Solution

The fourth proportional to 252,444.35, 378,400.70 and 83,919.45 is: 125,790.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,444.35 : 378,400.70 = 83,919.45 : x
  2. Step 2: Convert to fraction form
    252,444.35/378,400.70 = 83,919.45/x
  3. Step 3: Cross multiply
    252,444.35x = 378,400.70 × 83,919.45
  4. Step 4: Simplify right side
    252,444.35x = 31,755,176,731.61
  5. Step 5: Solve for x
    x = 31,755,176,731.61/252,444.35
  6. Step 6: Final answer
    x = 125,790.80

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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.