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Finding the Fourth Proportional to 278,994.90, 418,501.08 and 132,903.54

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Solution

The fourth proportional to 278,994.90, 418,501.08 and 132,903.54 is: 199,359.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,994.90 : 418,501.08 = 132,903.54 : x
  2. Step 2: Convert to fraction form
    278,994.90/418,501.08 = 132,903.54/x
  3. Step 3: Cross multiply
    278,994.90x = 418,501.08 × 132,903.54
  4. Step 4: Simplify right side
    278,994.90x = 55,620,275,025.82
  5. Step 5: Solve for x
    x = 55,620,275,025.82/278,994.90
  6. Step 6: Final answer
    x = 199,359.47

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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.