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Finding the Fourth Proportional to 439,571.34, 659,456.46 and 140,068.98

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Solution

The fourth proportional to 439,571.34, 659,456.46 and 140,068.98 is: 210,135.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,571.34 : 659,456.46 = 140,068.98 : x
  2. Step 2: Convert to fraction form
    439,571.34/659,456.46 = 140,068.98/x
  3. Step 3: Cross multiply
    439,571.34x = 659,456.46 × 140,068.98
  4. Step 4: Simplify right side
    439,571.34x = 92,369,393,706.61
  5. Step 5: Solve for x
    x = 92,369,393,706.61/439,571.34
  6. Step 6: Final answer
    x = 210,135.16

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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.