Home / 283,799.66-391,646.18-156,479.78

Finding the Fourth Proportional to 283,799.66, 391,646.18 and 156,479.78

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Solution

The fourth proportional to 283,799.66, 391,646.18 and 156,479.78 is: 215,943.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,799.66 : 391,646.18 = 156,479.78 : x
  2. Step 2: Convert to fraction form
    283,799.66/391,646.18 = 156,479.78/x
  3. Step 3: Cross multiply
    283,799.66x = 391,646.18 × 156,479.78
  4. Step 4: Simplify right side
    283,799.66x = 61,284,705,343.61
  5. Step 5: Solve for x
    x = 61,284,705,343.61/283,799.66
  6. Step 6: Final answer
    x = 215,943.55

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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.