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Finding the Fourth Proportional to 285,551.80, 394,061.10 and 158,235.64

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Solution

The fourth proportional to 285,551.80, 394,061.10 and 158,235.64 is: 218,364.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,551.80 : 394,061.10 = 158,235.64 : x
  2. Step 2: Convert to fraction form
    285,551.80/394,061.10 = 158,235.64/x
  3. Step 3: Cross multiply
    285,551.80x = 394,061.10 × 158,235.64
  4. Step 4: Simplify right side
    285,551.80x = 62,354,510,357.60
  5. Step 5: Solve for x
    x = 62,354,510,357.60/285,551.80
  6. Step 6: Final answer
    x = 218,364.97

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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.