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Finding the Fourth Proportional to 230,211.96, 345,317.46 and 72,454.20

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Solution

The fourth proportional to 230,211.96, 345,317.46 and 72,454.20 is: 108,681.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,211.96 : 345,317.46 = 72,454.20 : x
  2. Step 2: Convert to fraction form
    230,211.96/345,317.46 = 72,454.20/x
  3. Step 3: Cross multiply
    230,211.96x = 345,317.46 × 72,454.20
  4. Step 4: Simplify right side
    230,211.96x = 25,019,700,310.33
  5. Step 5: Solve for x
    x = 25,019,700,310.33/230,211.96
  6. Step 6: Final answer
    x = 108,681.15

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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.