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Finding the Fourth Proportional to 421,572.97, 581,755.97 and 240,343.27

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Solution

The fourth proportional to 421,572.97, 581,755.97 and 240,343.27 is: 331,665.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,572.97 : 581,755.97 = 240,343.27 : x
  2. Step 2: Convert to fraction form
    421,572.97/581,755.97 = 240,343.27/x
  3. Step 3: Cross multiply
    421,572.97x = 581,755.97 × 240,343.27
  4. Step 4: Simplify right side
    421,572.97x = 139,821,131,318.29
  5. Step 5: Solve for x
    x = 139,821,131,318.29/421,572.97
  6. Step 6: Final answer
    x = 331,665.31

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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.