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Finding the Fourth Proportional to 399,229.34, 550,937.73 and 255,989.95

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Solution

The fourth proportional to 399,229.34, 550,937.73 and 255,989.95 is: 353,266.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,229.34 : 550,937.73 = 255,989.95 : x
  2. Step 2: Convert to fraction form
    399,229.34/550,937.73 = 255,989.95/x
  3. Step 3: Cross multiply
    399,229.34x = 550,937.73 × 255,989.95
  4. Step 4: Simplify right side
    399,229.34x = 141,034,521,538.43
  5. Step 5: Solve for x
    x = 141,034,521,538.43/399,229.34
  6. Step 6: Final answer
    x = 353,266.93

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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.