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Finding the Fourth Proportional to 389,270.56, 537,035.52 and 274,715.52

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Solution

The fourth proportional to 389,270.56, 537,035.52 and 274,715.52 is: 378,996.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,270.56 : 537,035.52 = 274,715.52 : x
  2. Step 2: Convert to fraction form
    389,270.56/537,035.52 = 274,715.52/x
  3. Step 3: Cross multiply
    389,270.56x = 537,035.52 × 274,715.52
  4. Step 4: Simplify right side
    389,270.56x = 147,531,992,135.27
  5. Step 5: Solve for x
    x = 147,531,992,135.27/389,270.56
  6. Step 6: Final answer
    x = 378,996.02

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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.