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Finding the Fourth Proportional to 487,437.54, 672,651.22 and 269,640.54

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Solution

The fourth proportional to 487,437.54, 672,651.22 and 269,640.54 is: 372,096.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,437.54 : 672,651.22 = 269,640.54 : x
  2. Step 2: Convert to fraction form
    487,437.54/672,651.22 = 269,640.54/x
  3. Step 3: Cross multiply
    487,437.54x = 672,651.22 × 269,640.54
  4. Step 4: Simplify right side
    487,437.54x = 181,374,040,107.40
  5. Step 5: Solve for x
    x = 181,374,040,107.40/487,437.54
  6. Step 6: Final answer
    x = 372,096.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.