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Finding the Fourth Proportional to 399,044.86, 550,693.54 and 217,768.47

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Solution

The fourth proportional to 399,044.86, 550,693.54 and 217,768.47 is: 300,526.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,044.86 : 550,693.54 = 217,768.47 : x
  2. Step 2: Convert to fraction form
    399,044.86/550,693.54 = 217,768.47/x
  3. Step 3: Cross multiply
    399,044.86x = 550,693.54 × 217,768.47
  4. Step 4: Simplify right side
    399,044.86x = 119,923,686,110.57
  5. Step 5: Solve for x
    x = 119,923,686,110.57/399,044.86
  6. Step 6: Final answer
    x = 300,526.83

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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.