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Finding the Fourth Proportional to 285,545.79, 394,047.30 and 158,220.27

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Solution

The fourth proportional to 285,545.79, 394,047.30 and 158,220.27 is: 218,340.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,545.79 : 394,047.30 = 158,220.27 : x
  2. Step 2: Convert to fraction form
    285,545.79/394,047.30 = 158,220.27/x
  3. Step 3: Cross multiply
    285,545.79x = 394,047.30 × 158,220.27
  4. Step 4: Simplify right side
    285,545.79x = 62,346,270,198.77
  5. Step 5: Solve for x
    x = 62,346,270,198.77/285,545.79
  6. Step 6: Final answer
    x = 218,340.71

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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.