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Finding the Fourth Proportional to 261,165.05, 391,692.12 and 83,624.39

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Solution

The fourth proportional to 261,165.05, 391,692.12 and 83,624.39 is: 125,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,165.05 : 391,692.12 = 83,624.39 : x
  2. Step 2: Convert to fraction form
    261,165.05/391,692.12 = 83,624.39/x
  3. Step 3: Cross multiply
    261,165.05x = 391,692.12 × 83,624.39
  4. Step 4: Simplify right side
    261,165.05x = 32,755,012,644.35
  5. Step 5: Solve for x
    x = 32,755,012,644.35/261,165.05
  6. Step 6: Final answer
    x = 125,418.82

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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.