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Finding the Fourth Proportional to 230,076.48, 345,114.96 and 72,318.72

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Solution

The fourth proportional to 230,076.48, 345,114.96 and 72,318.72 is: 108,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,076.48 : 345,114.96 = 72,318.72 : x
  2. Step 2: Convert to fraction form
    230,076.48/345,114.96 = 72,318.72/x
  3. Step 3: Cross multiply
    230,076.48x = 345,114.96 × 72,318.72
  4. Step 4: Simplify right side
    230,076.48x = 24,958,272,160.05
  5. Step 5: Solve for x
    x = 24,958,272,160.05/230,076.48
  6. Step 6: Final answer
    x = 108,478.16

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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.