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Finding the Fourth Proportional to 425,329.02, 638,118.27 and 125,817.48

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Solution

The fourth proportional to 425,329.02, 638,118.27 and 125,817.48 is: 188,763.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,329.02 : 638,118.27 = 125,817.48 : x
  2. Step 2: Convert to fraction form
    425,329.02/638,118.27 = 125,817.48/x
  3. Step 3: Cross multiply
    425,329.02x = 638,118.27 × 125,817.48
  4. Step 4: Simplify right side
    425,329.02x = 80,286,432,673.36
  5. Step 5: Solve for x
    x = 80,286,432,673.36/425,329.02
  6. Step 6: Final answer
    x = 188,763.12

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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.