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Finding the Fourth Proportional to 421,572.29, 581,755.03 and 240,342.58

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Solution

The fourth proportional to 421,572.29, 581,755.03 and 240,342.58 is: 331,664.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,572.29 : 581,755.03 = 240,342.58 : x
  2. Step 2: Convert to fraction form
    421,572.29/581,755.03 = 240,342.58/x
  3. Step 3: Cross multiply
    421,572.29x = 581,755.03 × 240,342.58
  4. Step 4: Simplify right side
    421,572.29x = 139,820,503,636.47
  5. Step 5: Solve for x
    x = 139,820,503,636.47/421,572.29
  6. Step 6: Final answer
    x = 331,664.36

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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.