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Finding the Fourth Proportional to 439,818.84, 659,777.13 and 140,194.98

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Solution

The fourth proportional to 439,818.84, 659,777.13 and 140,194.98 is: 210,308.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,818.84 : 659,777.13 = 140,194.98 : x
  2. Step 2: Convert to fraction form
    439,818.84/659,777.13 = 140,194.98/x
  3. Step 3: Cross multiply
    439,818.84x = 659,777.13 × 140,194.98
  4. Step 4: Simplify right side
    439,818.84x = 92,497,441,544.81
  5. Step 5: Solve for x
    x = 92,497,441,544.81/439,818.84
  6. Step 6: Final answer
    x = 210,308.05

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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.