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Finding the Fourth Proportional to 278,599.60, 417,850.80 and 101,015.20

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Solution

The fourth proportional to 278,599.60, 417,850.80 and 101,015.20 is: 151,505.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,599.60 : 417,850.80 = 101,015.20 : x
  2. Step 2: Convert to fraction form
    278,599.60/417,850.80 = 101,015.20/x
  3. Step 3: Cross multiply
    278,599.60x = 417,850.80 × 101,015.20
  4. Step 4: Simplify right side
    278,599.60x = 42,209,282,132.16
  5. Step 5: Solve for x
    x = 42,209,282,132.16/278,599.60
  6. Step 6: Final answer
    x = 151,505.18

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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.