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Finding the Fourth Proportional to 425,858.23, 638,787.32 and 110,315.13

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Solution

The fourth proportional to 425,858.23, 638,787.32 and 110,315.13 is: 165,472.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,858.23 : 638,787.32 = 110,315.13 : x
  2. Step 2: Convert to fraction form
    425,858.23/638,787.32 = 110,315.13/x
  3. Step 3: Cross multiply
    425,858.23x = 638,787.32 × 110,315.13
  4. Step 4: Simplify right side
    425,858.23x = 70,467,906,248.15
  5. Step 5: Solve for x
    x = 70,467,906,248.15/425,858.23
  6. Step 6: Final answer
    x = 165,472.69

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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.