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Finding the Fourth Proportional to 489,354.88, 734,105.28 and 173,785.28

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Solution

The fourth proportional to 489,354.88, 734,105.28 and 173,785.28 is: 260,703.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,354.88 : 734,105.28 = 173,785.28 : x
  2. Step 2: Convert to fraction form
    489,354.88/734,105.28 = 173,785.28/x
  3. Step 3: Cross multiply
    489,354.88x = 734,105.28 × 173,785.28
  4. Step 4: Simplify right side
    489,354.88x = 127,576,691,634.28
  5. Step 5: Solve for x
    x = 127,576,691,634.28/489,354.88
  6. Step 6: Final answer
    x = 260,703.83

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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.