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Finding the Fourth Proportional to 485,837.68, 728,730.21 and 148,879.30

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Solution

The fourth proportional to 485,837.68, 728,730.21 and 148,879.30 is: 223,310.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,837.68 : 728,730.21 = 148,879.30 : x
  2. Step 2: Convert to fraction form
    485,837.68/728,730.21 = 148,879.30/x
  3. Step 3: Cross multiply
    485,837.68x = 728,730.21 × 148,879.30
  4. Step 4: Simplify right side
    485,837.68x = 108,492,839,910.00
  5. Step 5: Solve for x
    x = 108,492,839,910.00/485,837.68
  6. Step 6: Final answer
    x = 223,310.88

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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.