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Finding the Fourth Proportional to 285,543.79, 394,044.55 and 158,218.27

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Solution

The fourth proportional to 285,543.79, 394,044.55 and 158,218.27 is: 218,337.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,543.79 : 394,044.55 = 158,218.27 : x
  2. Step 2: Convert to fraction form
    285,543.79/394,044.55 = 158,218.27/x
  3. Step 3: Cross multiply
    285,543.79x = 394,044.55 × 158,218.27
  4. Step 4: Simplify right side
    285,543.79x = 62,345,047,003.93
  5. Step 5: Solve for x
    x = 62,345,047,003.93/285,543.79
  6. Step 6: Final answer
    x = 218,337.95

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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.