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Finding the Fourth Proportional to 485,282.80, 727,794.60 and 148,322.80

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Solution

The fourth proportional to 485,282.80, 727,794.60 and 148,322.80 is: 222,444.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,282.80 : 727,794.60 = 148,322.80 : x
  2. Step 2: Convert to fraction form
    485,282.80/727,794.60 = 148,322.80/x
  3. Step 3: Cross multiply
    485,282.80x = 727,794.60 × 148,322.80
  4. Step 4: Simplify right side
    485,282.80x = 107,948,532,896.88
  5. Step 5: Solve for x
    x = 107,948,532,896.88/485,282.80
  6. Step 6: Final answer
    x = 222,444.59

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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.