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Finding the Fourth Proportional to 300,138.40, 450,061.80 and 166,877.20

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Solution

The fourth proportional to 300,138.40, 450,061.80 and 166,877.20 is: 250,234.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,138.40 : 450,061.80 = 166,877.20 : x
  2. Step 2: Convert to fraction form
    300,138.40/450,061.80 = 166,877.20/x
  3. Step 3: Cross multiply
    300,138.40x = 450,061.80 × 166,877.20
  4. Step 4: Simplify right side
    300,138.40x = 75,105,053,010.96
  5. Step 5: Solve for x
    x = 75,105,053,010.96/300,138.40
  6. Step 6: Final answer
    x = 250,234.74

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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.