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Finding the Fourth Proportional to 392,881.83, 590,162.37 and 281,279.22

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Solution

The fourth proportional to 392,881.83, 590,162.37 and 281,279.22 is: 422,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,881.83 : 590,162.37 = 281,279.22 : x
  2. Step 2: Convert to fraction form
    392,881.83/590,162.37 = 281,279.22/x
  3. Step 3: Cross multiply
    392,881.83x = 590,162.37 × 281,279.22
  4. Step 4: Simplify right side
    392,881.83x = 166,000,411,106.95
  5. Step 5: Solve for x
    x = 166,000,411,106.95/392,881.83
  6. Step 6: Final answer
    x = 422,519.95

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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.