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Finding the Fourth Proportional to 492,116.38, 679,120.54 and 265,761.88

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Solution

The fourth proportional to 492,116.38, 679,120.54 and 265,761.88 is: 366,751.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,116.38 : 679,120.54 = 265,761.88 : x
  2. Step 2: Convert to fraction form
    492,116.38/679,120.54 = 265,761.88/x
  3. Step 3: Cross multiply
    492,116.38x = 679,120.54 × 265,761.88
  4. Step 4: Simplify right side
    492,116.38x = 180,484,349,094.81
  5. Step 5: Solve for x
    x = 180,484,349,094.81/492,116.38
  6. Step 6: Final answer
    x = 366,751.36

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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.