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Finding the Fourth Proportional to 492,342.38, 679,432.48 and 265,987.88

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Solution

The fourth proportional to 492,342.38, 679,432.48 and 265,987.88 is: 367,063.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,342.38 : 679,432.48 = 265,987.88 : x
  2. Step 2: Convert to fraction form
    492,342.38/679,432.48 = 265,987.88/x
  3. Step 3: Cross multiply
    492,342.38x = 679,432.48 × 265,987.88
  4. Step 4: Simplify right side
    492,342.38x = 180,720,800,896.21
  5. Step 5: Solve for x
    x = 180,720,800,896.21/492,342.38
  6. Step 6: Final answer
    x = 367,063.27

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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.