Home / 217,543.72-326,276.66-138,422.92

Finding the Fourth Proportional to 217,543.72, 326,276.66 and 138,422.92

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Solution

The fourth proportional to 217,543.72, 326,276.66 and 138,422.92 is: 207,609.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,543.72 : 326,276.66 = 138,422.92 : x
  2. Step 2: Convert to fraction form
    217,543.72/326,276.66 = 138,422.92/x
  3. Step 3: Cross multiply
    217,543.72x = 326,276.66 × 138,422.92
  4. Step 4: Simplify right side
    217,543.72x = 45,164,167,312.93
  5. Step 5: Solve for x
    x = 45,164,167,312.93/217,543.72
  6. Step 6: Final answer
    x = 207,609.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.