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Finding the Fourth Proportional to 437,890.88, 656,832.39 and 138,371.51

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Solution

The fourth proportional to 437,890.88, 656,832.39 and 138,371.51 is: 207,556.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,890.88 : 656,832.39 = 138,371.51 : x
  2. Step 2: Convert to fraction form
    437,890.88/656,832.39 = 138,371.51/x
  3. Step 3: Cross multiply
    437,890.88x = 656,832.39 × 138,371.51
  4. Step 4: Simplify right side
    437,890.88x = 90,886,886,337.05
  5. Step 5: Solve for x
    x = 90,886,886,337.05/437,890.88
  6. Step 6: Final answer
    x = 207,556.02

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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.