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Finding the Fourth Proportional to 252,385.70, 378,496.65 and 83,860.77

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Solution

The fourth proportional to 252,385.70, 378,496.65 and 83,860.77 is: 125,763.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,385.70 : 378,496.65 = 83,860.77 : x
  2. Step 2: Convert to fraction form
    252,385.70/378,496.65 = 83,860.77/x
  3. Step 3: Cross multiply
    252,385.70x = 378,496.65 × 83,860.77
  4. Step 4: Simplify right side
    252,385.70x = 31,741,020,511.42
  5. Step 5: Solve for x
    x = 31,741,020,511.42/252,385.70
  6. Step 6: Final answer
    x = 125,763.94

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1.5x scale

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.