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Finding the Fourth Proportional to 408,095.40, 611,705.70 and 155,278.20

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Solution

The fourth proportional to 408,095.40, 611,705.70 and 155,278.20 is: 232,750.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,095.40 : 611,705.70 = 155,278.20 : x
  2. Step 2: Convert to fraction form
    408,095.40/611,705.70 = 155,278.20/x
  3. Step 3: Cross multiply
    408,095.40x = 611,705.70 × 155,278.20
  4. Step 4: Simplify right side
    408,095.40x = 94,984,560,025.74
  5. Step 5: Solve for x
    x = 94,984,560,025.74/408,095.40
  6. Step 6: Final answer
    x = 232,750.87

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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.