Home / 283,445.71-391,155.02-156,121.31

Finding the Fourth Proportional to 283,445.71, 391,155.02 and 156,121.31

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Solution

The fourth proportional to 283,445.71, 391,155.02 and 156,121.31 is: 215,447.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,445.71 : 391,155.02 = 156,121.31 : x
  2. Step 2: Convert to fraction form
    283,445.71/391,155.02 = 156,121.31/x
  3. Step 3: Cross multiply
    283,445.71x = 391,155.02 × 156,121.31
  4. Step 4: Simplify right side
    283,445.71x = 61,067,632,179.70
  5. Step 5: Solve for x
    x = 61,067,632,179.70/283,445.71
  6. Step 6: Final answer
    x = 215,447.37

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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.