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Finding the Fourth Proportional to 285,814.85, 394,440.24 and 158,487.71

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Solution

The fourth proportional to 285,814.85, 394,440.24 and 158,487.71 is: 218,721.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,814.85 : 394,440.24 = 158,487.71 : x
  2. Step 2: Convert to fraction form
    285,814.85/394,440.24 = 158,487.71/x
  3. Step 3: Cross multiply
    285,814.85x = 394,440.24 × 158,487.71
  4. Step 4: Simplify right side
    285,814.85x = 62,513,930,369.45
  5. Step 5: Solve for x
    x = 62,513,930,369.45/285,814.85
  6. Step 6: Final answer
    x = 218,721.77

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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.