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Finding the Fourth Proportional to 486,906.80, 730,014.60 and 187,271.60

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Solution

The fourth proportional to 486,906.80, 730,014.60 and 187,271.60 is: 280,774.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,906.80 : 730,014.60 = 187,271.60 : x
  2. Step 2: Convert to fraction form
    486,906.80/730,014.60 = 187,271.60/x
  3. Step 3: Cross multiply
    486,906.80x = 730,014.60 × 187,271.60
  4. Step 4: Simplify right side
    486,906.80x = 136,711,002,165.36
  5. Step 5: Solve for x
    x = 136,711,002,165.36/486,906.80
  6. Step 6: Final answer
    x = 280,774.48

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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.