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Finding the Fourth Proportional to 439,915.76, 660,311.04 and 203,311.52

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Solution

The fourth proportional to 439,915.76, 660,311.04 and 203,311.52 is: 305,169.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,915.76 : 660,311.04 = 203,311.52 : x
  2. Step 2: Convert to fraction form
    439,915.76/660,311.04 = 203,311.52/x
  3. Step 3: Cross multiply
    439,915.76x = 660,311.04 × 203,311.52
  4. Step 4: Simplify right side
    439,915.76x = 134,248,841,215.18
  5. Step 5: Solve for x
    x = 134,248,841,215.18/439,915.76
  6. Step 6: Final answer
    x = 305,169.43

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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.