Home / 211,221.52-291,440.32-125,207.60

Finding the Fourth Proportional to 211,221.52, 291,440.32 and 125,207.60

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Solution

The fourth proportional to 211,221.52, 291,440.32 and 125,207.60 is: 172,759.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,221.52 : 291,440.32 = 125,207.60 : x
  2. Step 2: Convert to fraction form
    211,221.52/291,440.32 = 125,207.60/x
  3. Step 3: Cross multiply
    211,221.52x = 291,440.32 × 125,207.60
  4. Step 4: Simplify right side
    211,221.52x = 36,490,543,010.43
  5. Step 5: Solve for x
    x = 36,490,543,010.43/211,221.52
  6. Step 6: Final answer
    x = 172,759.59

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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.