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Finding the Fourth Proportional to 315,318.56, 435,149.23 and 179,372.21

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Solution

The fourth proportional to 315,318.56, 435,149.23 and 179,372.21 is: 247,539.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,318.56 : 435,149.23 = 179,372.21 : x
  2. Step 2: Convert to fraction form
    315,318.56/435,149.23 = 179,372.21/x
  3. Step 3: Cross multiply
    315,318.56x = 435,149.23 × 179,372.21
  4. Step 4: Simplify right side
    315,318.56x = 78,053,679,064.90
  5. Step 5: Solve for x
    x = 78,053,679,064.90/315,318.56
  6. Step 6: Final answer
    x = 247,539.12

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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.