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Finding the Fourth Proportional to 278,910.10, 418,802.55 and 160,812.10

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Solution

The fourth proportional to 278,910.10, 418,802.55 and 160,812.10 is: 241,470.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,910.10 : 418,802.55 = 160,812.10 : x
  2. Step 2: Convert to fraction form
    278,910.10/418,802.55 = 160,812.10/x
  3. Step 3: Cross multiply
    278,910.10x = 418,802.55 × 160,812.10
  4. Step 4: Simplify right side
    278,910.10x = 67,348,517,550.86
  5. Step 5: Solve for x
    x = 67,348,517,550.86/278,910.10
  6. Step 6: Final answer
    x = 241,470.34

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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.