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Finding the Fourth Proportional to 312,363.74, 468,545.61 and 75,706.42

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Solution

The fourth proportional to 312,363.74, 468,545.61 and 75,706.42 is: 113,559.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,363.74 : 468,545.61 = 75,706.42 : x
  2. Step 2: Convert to fraction form
    312,363.74/468,545.61 = 75,706.42/x
  3. Step 3: Cross multiply
    312,363.74x = 468,545.61 × 75,706.42
  4. Step 4: Simplify right side
    312,363.74x = 35,471,910,984.24
  5. Step 5: Solve for x
    x = 35,471,910,984.24/312,363.74
  6. Step 6: Final answer
    x = 113,559.63

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1.5x scale

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.