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Finding the Fourth Proportional to 440,409.08, 660,717.03 and 136,787.74

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Solution

The fourth proportional to 440,409.08, 660,717.03 and 136,787.74 is: 205,213.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,409.08 : 660,717.03 = 136,787.74 : x
  2. Step 2: Convert to fraction form
    440,409.08/660,717.03 = 136,787.74/x
  3. Step 3: Cross multiply
    440,409.08x = 660,717.03 × 136,787.74
  4. Step 4: Simplify right side
    440,409.08x = 90,377,988,174.37
  5. Step 5: Solve for x
    x = 90,377,988,174.37/440,409.08
  6. Step 6: Final answer
    x = 205,213.72

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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.