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Finding the Fourth Proportional to 391,449.06, 540,166.73 and 217,023.93

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Solution

The fourth proportional to 391,449.06, 540,166.73 and 217,023.93 is: 299,474.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,449.06 : 540,166.73 = 217,023.93 : x
  2. Step 2: Convert to fraction form
    391,449.06/540,166.73 = 217,023.93/x
  3. Step 3: Cross multiply
    391,449.06x = 540,166.73 × 217,023.93
  4. Step 4: Simplify right side
    391,449.06x = 117,229,105,514.73
  5. Step 5: Solve for x
    x = 117,229,105,514.73/391,449.06
  6. Step 6: Final answer
    x = 299,474.74

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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.