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Finding the Fourth Proportional to 252,654,683.60, 378,982,025.40 and 80,144,998.40

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Solution

The fourth proportional to 252,654,683.60, 378,982,025.40 and 80,144,998.40 is: 120,217,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,654,683.60 : 378,982,025.40 = 80,144,998.40 : x
  2. Step 2: Convert to fraction form
    252,654,683.60/378,982,025.40 = 80,144,998.40/x
  3. Step 3: Cross multiply
    252,654,683.60x = 378,982,025.40 × 80,144,998.40
  4. Step 4: Simplify right side
    252,654,683.60x = 30,373,513,819,311,760
  5. Step 5: Solve for x
    x = 30,373,513,819,311,760/252,654,683.60
  6. Step 6: Final answer
    x = 120,217,497.60

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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.