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Finding the Fourth Proportional to 424,240.80, 636,346.80 and 108,700.80

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Solution

The fourth proportional to 424,240.80, 636,346.80 and 108,700.80 is: 163,047.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,240.80 : 636,346.80 = 108,700.80 : x
  2. Step 2: Convert to fraction form
    424,240.80/636,346.80 = 108,700.80/x
  3. Step 3: Cross multiply
    424,240.80x = 636,346.80 × 108,700.80
  4. Step 4: Simplify right side
    424,240.80x = 69,171,406,237.44
  5. Step 5: Solve for x
    x = 69,171,406,237.44/424,240.80
  6. Step 6: Final answer
    x = 163,047.51

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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.