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Finding the Fourth Proportional to 487,673.61, 672,963.39 and 269,872.71

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Solution

The fourth proportional to 487,673.61, 672,963.39 and 269,872.71 is: 372,409.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,673.61 : 672,963.39 = 269,872.71 : x
  2. Step 2: Convert to fraction form
    487,673.61/672,963.39 = 269,872.71/x
  3. Step 3: Cross multiply
    487,673.61x = 672,963.39 × 269,872.71
  4. Step 4: Simplify right side
    487,673.61x = 181,614,453,790.09
  5. Step 5: Solve for x
    x = 181,614,453,790.09/487,673.61
  6. Step 6: Final answer
    x = 372,409.85

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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.