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Finding the Fourth Proportional to 391,258.60, 586,887.90 and 95,770.60

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Solution

The fourth proportional to 391,258.60, 586,887.90 and 95,770.60 is: 143,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,258.60 : 586,887.90 = 95,770.60 : x
  2. Step 2: Convert to fraction form
    391,258.60/586,887.90 = 95,770.60/x
  3. Step 3: Cross multiply
    391,258.60x = 586,887.90 × 95,770.60
  4. Step 4: Simplify right side
    391,258.60x = 56,206,606,315.74
  5. Step 5: Solve for x
    x = 56,206,606,315.74/391,258.60
  6. Step 6: Final answer
    x = 143,655.90

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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.