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Finding the Fourth Proportional to 278,480.80, 417,721.20 and 184,002.40

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Solution

The fourth proportional to 278,480.80, 417,721.20 and 184,002.40 is: 276,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,480.80 : 417,721.20 = 184,002.40 : x
  2. Step 2: Convert to fraction form
    278,480.80/417,721.20 = 184,002.40/x
  3. Step 3: Cross multiply
    278,480.80x = 417,721.20 × 184,002.40
  4. Step 4: Simplify right side
    278,480.80x = 76,861,703,330.88
  5. Step 5: Solve for x
    x = 76,861,703,330.88/278,480.80
  6. Step 6: Final answer
    x = 276,003.60

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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.