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Finding the Fourth Proportional to 487,565.78, 672,824.49 and 269,774.85

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Solution

The fourth proportional to 487,565.78, 672,824.49 and 269,774.85 is: 372,280.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,565.78 : 672,824.49 = 269,774.85 : x
  2. Step 2: Convert to fraction form
    487,565.78/672,824.49 = 269,774.85/x
  3. Step 3: Cross multiply
    487,565.78x = 672,824.49 × 269,774.85
  4. Step 4: Simplify right side
    487,565.78x = 181,511,128,895.00
  5. Step 5: Solve for x
    x = 181,511,128,895.00/487,565.78
  6. Step 6: Final answer
    x = 372,280.29

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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.