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Finding the Fourth Proportional to 487,436.82, 672,650.22 and 269,639.81

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Solution

The fourth proportional to 487,436.82, 672,650.22 and 269,639.81 is: 372,095.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,436.82 : 672,650.22 = 269,639.81 : x
  2. Step 2: Convert to fraction form
    487,436.82/672,650.22 = 269,639.81/x
  3. Step 3: Cross multiply
    487,436.82x = 672,650.22 × 269,639.81
  4. Step 4: Simplify right side
    487,436.82x = 181,373,279,198.88
  5. Step 5: Solve for x
    x = 181,373,279,198.88/487,436.82
  6. Step 6: Final answer
    x = 372,095.98

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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.