Home / 330,691.46-456,451.33-215,987.63

Finding the Fourth Proportional to 330,691.46, 456,451.33 and 215,987.63

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Solution

The fourth proportional to 330,691.46, 456,451.33 and 215,987.63 is: 298,126.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,691.46 : 456,451.33 = 215,987.63 : x
  2. Step 2: Convert to fraction form
    330,691.46/456,451.33 = 215,987.63/x
  3. Step 3: Cross multiply
    330,691.46x = 456,451.33 × 215,987.63
  4. Step 4: Simplify right side
    330,691.46x = 98,587,841,578.21
  5. Step 5: Solve for x
    x = 98,587,841,578.21/330,691.46
  6. Step 6: Final answer
    x = 298,126.37

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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.