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Finding the Fourth Proportional to 485,296.65, 728,025.17 and 219,051.27

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Solution

The fourth proportional to 485,296.65, 728,025.17 and 219,051.27 is: 328,613.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,296.65 : 728,025.17 = 219,051.27 : x
  2. Step 2: Convert to fraction form
    485,296.65/728,025.17 = 219,051.27/x
  3. Step 3: Cross multiply
    485,296.65x = 728,025.17 × 219,051.27
  4. Step 4: Simplify right side
    485,296.65x = 159,474,836,985.21
  5. Step 5: Solve for x
    x = 159,474,836,985.21/485,296.65
  6. Step 6: Final answer
    x = 328,613.10

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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.