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Finding the Fourth Proportional to 492,129.38, 679,138.48 and 265,774.88

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Solution

The fourth proportional to 492,129.38, 679,138.48 and 265,774.88 is: 366,769.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,129.38 : 679,138.48 = 265,774.88 : x
  2. Step 2: Convert to fraction form
    492,129.38/679,138.48 = 265,774.88/x
  3. Step 3: Cross multiply
    492,129.38x = 679,138.48 × 265,774.88
  4. Step 4: Simplify right side
    492,129.38x = 180,497,948,025.38
  5. Step 5: Solve for x
    x = 180,497,948,025.38/492,129.38
  6. Step 6: Final answer
    x = 366,769.30

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1.5x scale

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.