Home / 283,645.90-391,427.86-156,318.76

Finding the Fourth Proportional to 283,645.90, 391,427.86 and 156,318.76

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Solution

The fourth proportional to 283,645.90, 391,427.86 and 156,318.76 is: 215,717.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,645.90 : 391,427.86 = 156,318.76 : x
  2. Step 2: Convert to fraction form
    283,645.90/391,427.86 = 156,318.76/x
  3. Step 3: Cross multiply
    283,645.90x = 391,427.86 × 156,318.76
  4. Step 4: Simplify right side
    283,645.90x = 61,187,517,704.65
  5. Step 5: Solve for x
    x = 61,187,517,704.65/283,645.90
  6. Step 6: Final answer
    x = 215,717.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.