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Finding the Fourth Proportional to 482,659.60, 666,167.16 and 278,743.72

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Solution

The fourth proportional to 482,659.60, 666,167.16 and 278,743.72 is: 384,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,659.60 : 666,167.16 = 278,743.72 : x
  2. Step 2: Convert to fraction form
    482,659.60/666,167.16 = 278,743.72/x
  3. Step 3: Cross multiply
    482,659.60x = 666,167.16 × 278,743.72
  4. Step 4: Simplify right side
    482,659.60x = 185,689,912,320.24
  5. Step 5: Solve for x
    x = 185,689,912,320.24/482,659.60
  6. Step 6: Final answer
    x = 384,722.30

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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.