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Finding the Fourth Proportional to 432,856.70, 649,285.05 and 273,424.40

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Solution

The fourth proportional to 432,856.70, 649,285.05 and 273,424.40 is: 410,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,856.70 : 649,285.05 = 273,424.40 : x
  2. Step 2: Convert to fraction form
    432,856.70/649,285.05 = 273,424.40/x
  3. Step 3: Cross multiply
    432,856.70x = 649,285.05 × 273,424.40
  4. Step 4: Simplify right side
    432,856.70x = 177,530,375,225.22
  5. Step 5: Solve for x
    x = 177,530,375,225.22/432,856.70
  6. Step 6: Final answer
    x = 410,136.60

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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.