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Finding the Fourth Proportional to 424,216.80, 636,310.56 and 108,676.80

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Solution

The fourth proportional to 424,216.80, 636,310.56 and 108,676.80 is: 163,011.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,216.80 : 636,310.56 = 108,676.80 : x
  2. Step 2: Convert to fraction form
    424,216.80/636,310.56 = 108,676.80/x
  3. Step 3: Cross multiply
    424,216.80x = 636,310.56 × 108,676.80
  4. Step 4: Simplify right side
    424,216.80x = 69,152,195,467.01
  5. Step 5: Solve for x
    x = 69,152,195,467.01/424,216.80
  6. Step 6: Final answer
    x = 163,011.45

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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.