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Finding the Fourth Proportional to 425,938.91, 638,907.75 and 110,396.12

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Solution

The fourth proportional to 425,938.91, 638,907.75 and 110,396.12 is: 165,594.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,938.91 : 638,907.75 = 110,396.12 : x
  2. Step 2: Convert to fraction form
    425,938.91/638,907.75 = 110,396.12/x
  3. Step 3: Cross multiply
    425,938.91x = 638,907.75 × 110,396.12
  4. Step 4: Simplify right side
    425,938.91x = 70,532,933,443.39
  5. Step 5: Solve for x
    x = 70,532,933,443.39/425,938.91
  6. Step 6: Final answer
    x = 165,594.02

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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.