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Finding the Fourth Proportional to 412,416.32, 618,612.96 and 131,950.40

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Solution

The fourth proportional to 412,416.32, 618,612.96 and 131,950.40 is: 197,921.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,416.32 : 618,612.96 = 131,950.40 : x
  2. Step 2: Convert to fraction form
    412,416.32/618,612.96 = 131,950.40/x
  3. Step 3: Cross multiply
    412,416.32x = 618,612.96 × 131,950.40
  4. Step 4: Simplify right side
    412,416.32x = 81,626,227,517.18
  5. Step 5: Solve for x
    x = 81,626,227,517.18/412,416.32
  6. Step 6: Final answer
    x = 197,921.91

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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.