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Finding the Fourth Proportional to 439,575.84, 659,463.21 and 140,073.48

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Solution

The fourth proportional to 439,575.84, 659,463.21 and 140,073.48 is: 210,141.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,575.84 : 659,463.21 = 140,073.48 : x
  2. Step 2: Convert to fraction form
    439,575.84/659,463.21 = 140,073.48/x
  3. Step 3: Cross multiply
    439,575.84x = 659,463.21 × 140,073.48
  4. Step 4: Simplify right side
    439,575.84x = 92,373,306,756.67
  5. Step 5: Solve for x
    x = 92,373,306,756.67/439,575.84
  6. Step 6: Final answer
    x = 210,141.91

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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.