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Finding the Fourth Proportional to 378,394.28, 566,432.28 and 245,009.15

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Solution

The fourth proportional to 378,394.28, 566,432.28 and 245,009.15 is: 366,763.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,394.28 : 566,432.28 = 245,009.15 : x
  2. Step 2: Convert to fraction form
    378,394.28/566,432.28 = 245,009.15/x
  3. Step 3: Cross multiply
    378,394.28x = 566,432.28 × 245,009.15
  4. Step 4: Simplify right side
    378,394.28x = 138,781,091,455.36
  5. Step 5: Solve for x
    x = 138,781,091,455.36/378,394.28
  6. Step 6: Final answer
    x = 366,763.19

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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.