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Finding the Fourth Proportional to 278,294.17, 384,046.70 and 150,969.78

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Solution

The fourth proportional to 278,294.17, 384,046.70 and 150,969.78 is: 208,338.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,294.17 : 384,046.70 = 150,969.78 : x
  2. Step 2: Convert to fraction form
    278,294.17/384,046.70 = 150,969.78/x
  3. Step 3: Cross multiply
    278,294.17x = 384,046.70 × 150,969.78
  4. Step 4: Simplify right side
    278,294.17x = 57,979,445,808.73
  5. Step 5: Solve for x
    x = 57,979,445,808.73/278,294.17
  6. Step 6: Final answer
    x = 208,338.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.