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Finding the Fourth Proportional to 248,715.52, 343,234.70 and 135,545.56

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Solution

The fourth proportional to 248,715.52, 343,234.70 and 135,545.56 is: 187,056.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,715.52 : 343,234.70 = 135,545.56 : x
  2. Step 2: Convert to fraction form
    248,715.52/343,234.70 = 135,545.56/x
  3. Step 3: Cross multiply
    248,715.52x = 343,234.70 × 135,545.56
  4. Step 4: Simplify right side
    248,715.52x = 46,523,939,622.93
  5. Step 5: Solve for x
    x = 46,523,939,622.93/248,715.52
  6. Step 6: Final answer
    x = 187,056.84

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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.