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Finding the Fourth Proportional to 445,363.60, 666,490.20 and 311,616.40

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Solution

The fourth proportional to 445,363.60, 666,490.20 and 311,616.40 is: 466,336.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,363.60 : 666,490.20 = 311,616.40 : x
  2. Step 2: Convert to fraction form
    445,363.60/666,490.20 = 311,616.40/x
  3. Step 3: Cross multiply
    445,363.60x = 666,490.20 × 311,616.40
  4. Step 4: Simplify right side
    445,363.60x = 207,689,276,759.28
  5. Step 5: Solve for x
    x = 207,689,276,759.28/445,363.60
  6. Step 6: Final answer
    x = 466,336.44

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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.