Home / 211,321.97-291,654.18-130,775.43

Finding the Fourth Proportional to 211,321.97, 291,654.18 and 130,775.43

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Solution

The fourth proportional to 211,321.97, 291,654.18 and 130,775.43 is: 180,488.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,321.97 : 291,654.18 = 130,775.43 : x
  2. Step 2: Convert to fraction form
    211,321.97/291,654.18 = 130,775.43/x
  3. Step 3: Cross multiply
    211,321.97x = 291,654.18 × 130,775.43
  4. Step 4: Simplify right side
    211,321.97x = 38,141,200,800.80
  5. Step 5: Solve for x
    x = 38,141,200,800.80/211,321.97
  6. Step 6: Final answer
    x = 180,488.58

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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.