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Finding the Fourth Proportional to 378,769.02, 522,703.71 and 206,699.10

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Solution

The fourth proportional to 378,769.02, 522,703.71 and 206,699.10 is: 285,246.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,769.02 : 522,703.71 = 206,699.10 : x
  2. Step 2: Convert to fraction form
    378,769.02/522,703.71 = 206,699.10/x
  3. Step 3: Cross multiply
    378,769.02x = 522,703.71 × 206,699.10
  4. Step 4: Simplify right side
    378,769.02x = 108,042,386,423.66
  5. Step 5: Solve for x
    x = 108,042,386,423.66/378,769.02
  6. Step 6: Final answer
    x = 285,246.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.