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Finding the Fourth Proportional to 424,255.80, 636,369.30 and 108,715.80

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Solution

The fourth proportional to 424,255.80, 636,369.30 and 108,715.80 is: 163,070.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,255.80 : 636,369.30 = 108,715.80 : x
  2. Step 2: Convert to fraction form
    424,255.80/636,369.30 = 108,715.80/x
  3. Step 3: Cross multiply
    424,255.80x = 636,369.30 × 108,715.80
  4. Step 4: Simplify right side
    424,255.80x = 69,183,397,544.94
  5. Step 5: Solve for x
    x = 69,183,397,544.94/424,255.80
  6. Step 6: Final answer
    x = 163,070.01

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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.