Home / 287,230.20-430,845.30-129,766.20

Finding the Fourth Proportional to 287,230.20, 430,845.30 and 129,766.20

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Solution

The fourth proportional to 287,230.20, 430,845.30 and 129,766.20 is: 194,649.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,230.20 : 430,845.30 = 129,766.20 : x
  2. Step 2: Convert to fraction form
    287,230.20/430,845.30 = 129,766.20/x
  3. Step 3: Cross multiply
    287,230.20x = 430,845.30 × 129,766.20
  4. Step 4: Simplify right side
    287,230.20x = 55,909,157,368.86
  5. Step 5: Solve for x
    x = 55,909,157,368.86/287,230.20
  6. Step 6: Final answer
    x = 194,649.30

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Similar ratio
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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.