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Finding the Fourth Proportional to 278,233.60, 417,452.80 and 112,038.40

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Solution

The fourth proportional to 278,233.60, 417,452.80 and 112,038.40 is: 168,098.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,233.60 : 417,452.80 = 112,038.40 : x
  2. Step 2: Convert to fraction form
    278,233.60/417,452.80 = 112,038.40/x
  3. Step 3: Cross multiply
    278,233.60x = 417,452.80 × 112,038.40
  4. Step 4: Simplify right side
    278,233.60x = 46,770,743,787.52
  5. Step 5: Solve for x
    x = 46,770,743,787.52/278,233.60
  6. Step 6: Final answer
    x = 168,098.83

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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.