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Finding the Fourth Proportional to 766,140, 1,149,210 and 240,828

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Solution

The fourth proportional to 766,140, 1,149,210 and 240,828 is: 361,242

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,140 : 1,149,210 = 240,828 : x
  2. Step 2: Convert to fraction form
    766,140/1,149,210 = 240,828/x
  3. Step 3: Cross multiply
    766,140x = 1,149,210 × 240,828
  4. Step 4: Simplify right side
    766,140x = 276,761,945,880
  5. Step 5: Solve for x
    x = 276,761,945,880/766,140
  6. Step 6: Final answer
    x = 361,242

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.