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Finding the Fourth Proportional to 440,199.81, 660,056.41 and 136,509.75

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Solution

The fourth proportional to 440,199.81, 660,056.41 and 136,509.75 is: 204,689.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,199.81 : 660,056.41 = 136,509.75 : x
  2. Step 2: Convert to fraction form
    440,199.81/660,056.41 = 136,509.75/x
  3. Step 3: Cross multiply
    440,199.81x = 660,056.41 × 136,509.75
  4. Step 4: Simplify right side
    440,199.81x = 90,104,135,173.72
  5. Step 5: Solve for x
    x = 90,104,135,173.72/440,199.81
  6. Step 6: Final answer
    x = 204,689.17

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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.