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Finding the Fourth Proportional to 253,658.37, 380,545.87 and 76,168.74

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Solution

The fourth proportional to 253,658.37, 380,545.87 and 76,168.74 is: 114,270.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,658.37 : 380,545.87 = 76,168.74 : x
  2. Step 2: Convert to fraction form
    253,658.37/380,545.87 = 76,168.74/x
  3. Step 3: Cross multiply
    253,658.37x = 380,545.87 × 76,168.74
  4. Step 4: Simplify right side
    253,658.37x = 28,985,699,239.68
  5. Step 5: Solve for x
    x = 28,985,699,239.68/253,658.37
  6. Step 6: Final answer
    x = 114,270.62

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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.