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Finding the Fourth Proportional to 247,211.60, 370,817.40 and 80,999.60

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Solution

The fourth proportional to 247,211.60, 370,817.40 and 80,999.60 is: 121,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,211.60 : 370,817.40 = 80,999.60 : x
  2. Step 2: Convert to fraction form
    247,211.60/370,817.40 = 80,999.60/x
  3. Step 3: Cross multiply
    247,211.60x = 370,817.40 × 80,999.60
  4. Step 4: Simplify right side
    247,211.60x = 30,036,061,073.04
  5. Step 5: Solve for x
    x = 30,036,061,073.04/247,211.60
  6. Step 6: Final answer
    x = 121,499.40

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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.