Home / 283,427.42-391,129.85-156,103.02

Finding the Fourth Proportional to 283,427.42, 391,129.85 and 156,103.02

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Solution

The fourth proportional to 283,427.42, 391,129.85 and 156,103.02 is: 215,422.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,427.42 : 391,129.85 = 156,103.02 : x
  2. Step 2: Convert to fraction form
    283,427.42/391,129.85 = 156,103.02/x
  3. Step 3: Cross multiply
    283,427.42x = 391,129.85 × 156,103.02
  4. Step 4: Simplify right side
    283,427.42x = 61,056,549,868.65
  5. Step 5: Solve for x
    x = 61,056,549,868.65/283,427.42
  6. Step 6: Final answer
    x = 215,422.17

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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.