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Finding the Fourth Proportional to 437,672.70, 656,509.05 and 122,129.10

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Solution

The fourth proportional to 437,672.70, 656,509.05 and 122,129.10 is: 183,193.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,672.70 : 656,509.05 = 122,129.10 : x
  2. Step 2: Convert to fraction form
    437,672.70/656,509.05 = 122,129.10/x
  3. Step 3: Cross multiply
    437,672.70x = 656,509.05 × 122,129.10
  4. Step 4: Simplify right side
    437,672.70x = 80,178,859,418.36
  5. Step 5: Solve for x
    x = 80,178,859,418.36/437,672.70
  6. Step 6: Final answer
    x = 183,193.65

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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.