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Finding the Fourth Proportional to 492,116.32, 679,120.50 and 265,761.80

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Solution

The fourth proportional to 492,116.32, 679,120.50 and 265,761.80 is: 366,751.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,116.32 : 679,120.50 = 265,761.80 : x
  2. Step 2: Convert to fraction form
    492,116.32/679,120.50 = 265,761.80/x
  3. Step 3: Cross multiply
    492,116.32x = 679,120.50 × 265,761.80
  4. Step 4: Simplify right side
    492,116.32x = 180,484,286,496.90
  5. Step 5: Solve for x
    x = 180,484,286,496.90/492,116.32
  6. Step 6: Final answer
    x = 366,751.27

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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.