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Finding the Fourth Proportional to 425,940.91, 638,910.75 and 110,398.12

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Solution

The fourth proportional to 425,940.91, 638,910.75 and 110,398.12 is: 165,597.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,940.91 : 638,910.75 = 110,398.12 : x
  2. Step 2: Convert to fraction form
    425,940.91/638,910.75 = 110,398.12/x
  3. Step 3: Cross multiply
    425,940.91x = 638,910.75 × 110,398.12
  4. Step 4: Simplify right side
    425,940.91x = 70,534,545,647.79
  5. Step 5: Solve for x
    x = 70,534,545,647.79/425,940.91
  6. Step 6: Final answer
    x = 165,597.02

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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.