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Finding the Fourth Proportional to 412,816.80, 619,225.20 and 132,362.40

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Solution

The fourth proportional to 412,816.80, 619,225.20 and 132,362.40 is: 198,543.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,816.80 : 619,225.20 = 132,362.40 : x
  2. Step 2: Convert to fraction form
    412,816.80/619,225.20 = 132,362.40/x
  3. Step 3: Cross multiply
    412,816.80x = 619,225.20 × 132,362.40
  4. Step 4: Simplify right side
    412,816.80x = 81,962,133,612.48
  5. Step 5: Solve for x
    x = 81,962,133,612.48/412,816.80
  6. Step 6: Final answer
    x = 198,543.60

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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.