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Finding the Fourth Proportional to 440,406.32, 660,423.58 and 136,763.24

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Solution

The fourth proportional to 440,406.32, 660,423.58 and 136,763.24 is: 205,087.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,406.32 : 660,423.58 = 136,763.24 : x
  2. Step 2: Convert to fraction form
    440,406.32/660,423.58 = 136,763.24/x
  3. Step 3: Cross multiply
    440,406.32x = 660,423.58 × 136,763.24
  4. Step 4: Simplify right side
    440,406.32x = 90,321,664,929.17
  5. Step 5: Solve for x
    x = 90,321,664,929.17/440,406.32
  6. Step 6: Final answer
    x = 205,087.12

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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.