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Finding the Fourth Proportional to 425,886.48, 638,780.04 and 110,319.12

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Solution

The fourth proportional to 425,886.48, 638,780.04 and 110,319.12 is: 165,465.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,886.48 : 638,780.04 = 110,319.12 : x
  2. Step 2: Convert to fraction form
    425,886.48/638,780.04 = 110,319.12/x
  3. Step 3: Cross multiply
    425,886.48x = 638,780.04 × 110,319.12
  4. Step 4: Simplify right side
    425,886.48x = 70,469,651,886.36
  5. Step 5: Solve for x
    x = 70,469,651,886.36/425,886.48
  6. Step 6: Final answer
    x = 165,465.81

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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.