Home / 387,247.57-534,408.51-215,181.43

Finding the Fourth Proportional to 387,247.57, 534,408.51 and 215,181.43

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Solution

The fourth proportional to 387,247.57, 534,408.51 and 215,181.43 is: 296,954.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,247.57 : 534,408.51 = 215,181.43 : x
  2. Step 2: Convert to fraction form
    387,247.57/534,408.51 = 215,181.43/x
  3. Step 3: Cross multiply
    387,247.57x = 534,408.51 × 215,181.43
  4. Step 4: Simplify right side
    387,247.57x = 114,994,787,385.97
  5. Step 5: Solve for x
    x = 114,994,787,385.97/387,247.57
  6. Step 6: Final answer
    x = 296,954.19

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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.