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Finding the Fourth Proportional to 440,797.32, 661,143.42 and 260,990.28

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Solution

The fourth proportional to 440,797.32, 661,143.42 and 260,990.28 is: 391,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,797.32 : 661,143.42 = 260,990.28 : x
  2. Step 2: Convert to fraction form
    440,797.32/661,143.42 = 260,990.28/x
  3. Step 3: Cross multiply
    440,797.32x = 661,143.42 × 260,990.28
  4. Step 4: Simplify right side
    440,797.32x = 172,552,006,305.96
  5. Step 5: Solve for x
    x = 172,552,006,305.96/440,797.32
  6. Step 6: Final answer
    x = 391,454.30

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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.