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Finding the Fourth Proportional to 425,020.48, 637,647.12 and 125,500.80

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Solution

The fourth proportional to 425,020.48, 637,647.12 and 125,500.80 is: 188,285.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,020.48 : 637,647.12 = 125,500.80 : x
  2. Step 2: Convert to fraction form
    425,020.48/637,647.12 = 125,500.80/x
  3. Step 3: Cross multiply
    425,020.48x = 637,647.12 × 125,500.80
  4. Step 4: Simplify right side
    425,020.48x = 80,025,223,677.70
  5. Step 5: Solve for x
    x = 80,025,223,677.70/425,020.48
  6. Step 6: Final answer
    x = 188,285.57

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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.