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Finding the Fourth Proportional to 485,422.56, 669,905.88 and 270,564

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Solution

The fourth proportional to 485,422.56, 669,905.88 and 270,564 is: 373,391.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,422.56 : 669,905.88 = 270,564 : x
  2. Step 2: Convert to fraction form
    485,422.56/669,905.88 = 270,564/x
  3. Step 3: Cross multiply
    485,422.56x = 669,905.88 × 270,564
  4. Step 4: Simplify right side
    485,422.56x = 181,252,414,516.32
  5. Step 5: Solve for x
    x = 181,252,414,516.32/485,422.56
  6. Step 6: Final answer
    x = 373,391.00

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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.