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Finding the Fourth Proportional to 424,074.45, 636,142.56 and 157,834.88

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Solution

The fourth proportional to 424,074.45, 636,142.56 and 157,834.88 is: 236,763.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,074.45 : 636,142.56 = 157,834.88 : x
  2. Step 2: Convert to fraction form
    424,074.45/636,142.56 = 157,834.88/x
  3. Step 3: Cross multiply
    424,074.45x = 636,142.56 × 157,834.88
  4. Step 4: Simplify right side
    424,074.45x = 100,405,484,620.49
  5. Step 5: Solve for x
    x = 100,405,484,620.49/424,074.45
  6. Step 6: Final answer
    x = 236,763.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.