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Finding the Fourth Proportional to 439,901.51, 659,863.73 and 140,381.69

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Solution

The fourth proportional to 439,901.51, 659,863.73 and 140,381.69 is: 210,576.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,901.51 : 659,863.73 = 140,381.69 : x
  2. Step 2: Convert to fraction form
    439,901.51/659,863.73 = 140,381.69/x
  3. Step 3: Cross multiply
    439,901.51x = 659,863.73 × 140,381.69
  4. Step 4: Simplify right side
    439,901.51x = 92,632,782,287.79
  5. Step 5: Solve for x
    x = 92,632,782,287.79/439,901.51
  6. Step 6: Final answer
    x = 210,576.19

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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.