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Finding the Fourth Proportional to 485,924.17, 728,803.21 and 130,855.15

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Solution

The fourth proportional to 485,924.17, 728,803.21 and 130,855.15 is: 196,260.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,924.17 : 728,803.21 = 130,855.15 : x
  2. Step 2: Convert to fraction form
    485,924.17/728,803.21 = 130,855.15/x
  3. Step 3: Cross multiply
    485,924.17x = 728,803.21 × 130,855.15
  4. Step 4: Simplify right side
    485,924.17x = 95,367,653,365.03
  5. Step 5: Solve for x
    x = 95,367,653,365.03/485,924.17
  6. Step 6: Final answer
    x = 196,260.36

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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.