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Finding the Fourth Proportional to 278,481.60, 384,294.30 and 151,154.48

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Solution

The fourth proportional to 278,481.60, 384,294.30 and 151,154.48 is: 208,587.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,481.60 : 384,294.30 = 151,154.48 : x
  2. Step 2: Convert to fraction form
    278,481.60/384,294.30 = 151,154.48/x
  3. Step 3: Cross multiply
    278,481.60x = 384,294.30 × 151,154.48
  4. Step 4: Simplify right side
    278,481.60x = 58,087,805,083.46
  5. Step 5: Solve for x
    x = 58,087,805,083.46/278,481.60
  6. Step 6: Final answer
    x = 208,587.59

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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.