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Finding the Fourth Proportional to 440,362.28, 660,539.88 and 261,686.00

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Solution

The fourth proportional to 440,362.28, 660,539.88 and 261,686.00 is: 392,526.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,362.28 : 660,539.88 = 261,686.00 : x
  2. Step 2: Convert to fraction form
    440,362.28/660,539.88 = 261,686.00/x
  3. Step 3: Cross multiply
    440,362.28x = 660,539.88 × 261,686.00
  4. Step 4: Simplify right side
    440,362.28x = 172,854,035,734.98
  5. Step 5: Solve for x
    x = 172,854,035,734.98/440,362.28
  6. Step 6: Final answer
    x = 392,526.89

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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.