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Finding the Fourth Proportional to 391,450.06, 540,168.10 and 217,024.93

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Solution

The fourth proportional to 391,450.06, 540,168.10 and 217,024.93 is: 299,476.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,450.06 : 540,168.10 = 217,024.93 : x
  2. Step 2: Convert to fraction form
    391,450.06/540,168.10 = 217,024.93/x
  3. Step 3: Cross multiply
    391,450.06x = 540,168.10 × 217,024.93
  4. Step 4: Simplify right side
    391,450.06x = 117,229,944,090.73
  5. Step 5: Solve for x
    x = 117,229,944,090.73/391,450.06
  6. Step 6: Final answer
    x = 299,476.12

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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.