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Finding the Fourth Proportional to 440,361.28, 660,538.38 and 261,685.00

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Solution

The fourth proportional to 440,361.28, 660,538.38 and 261,685.00 is: 392,525.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,361.28 : 660,538.38 = 261,685.00 : x
  2. Step 2: Convert to fraction form
    440,361.28/660,538.38 = 261,685.00/x
  3. Step 3: Cross multiply
    440,361.28x = 660,538.38 × 261,685.00
  4. Step 4: Simplify right side
    440,361.28x = 172,852,982,667.61
  5. Step 5: Solve for x
    x = 172,852,982,667.61/440,361.28
  6. Step 6: Final answer
    x = 392,525.39

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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.