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Finding the Fourth Proportional to 309,816.72, 427,545.88 and 173,850.35

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Solution

The fourth proportional to 309,816.72, 427,545.88 and 173,850.35 is: 239,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,816.72 : 427,545.88 = 173,850.35 : x
  2. Step 2: Convert to fraction form
    309,816.72/427,545.88 = 173,850.35/x
  3. Step 3: Cross multiply
    309,816.72x = 427,545.88 × 173,850.35
  4. Step 4: Simplify right side
    309,816.72x = 74,328,998,306.70
  5. Step 5: Solve for x
    x = 74,328,998,306.70/309,816.72
  6. Step 6: Final answer
    x = 239,912.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.