Home / 283,427.28-391,127.16-156,100.20

Finding the Fourth Proportional to 283,427.28, 391,127.16 and 156,100.20

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Solution

The fourth proportional to 283,427.28, 391,127.16 and 156,100.20 is: 215,416.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,427.28 : 391,127.16 = 156,100.20 : x
  2. Step 2: Convert to fraction form
    283,427.28/391,127.16 = 156,100.20/x
  3. Step 3: Cross multiply
    283,427.28x = 391,127.16 × 156,100.20
  4. Step 4: Simplify right side
    283,427.28x = 61,055,027,901.43
  5. Step 5: Solve for x
    x = 61,055,027,901.43/283,427.28
  6. Step 6: Final answer
    x = 215,416.91

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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.