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Finding the Fourth Proportional to 230,511.78, 318,110.20 and 127,157.86

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Solution

The fourth proportional to 230,511.78, 318,110.20 and 127,157.86 is: 175,480.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,511.78 : 318,110.20 = 127,157.86 : x
  2. Step 2: Convert to fraction form
    230,511.78/318,110.20 = 127,157.86/x
  3. Step 3: Cross multiply
    230,511.78x = 318,110.20 × 127,157.86
  4. Step 4: Simplify right side
    230,511.78x = 40,450,212,276.17
  5. Step 5: Solve for x
    x = 40,450,212,276.17/230,511.78
  6. Step 6: Final answer
    x = 175,480.02

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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.