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Finding the Fourth Proportional to 303,372.20, 455,058.30 and 81,756.20

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Solution

The fourth proportional to 303,372.20, 455,058.30 and 81,756.20 is: 122,634.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,372.20 : 455,058.30 = 81,756.20 : x
  2. Step 2: Convert to fraction form
    303,372.20/455,058.30 = 81,756.20/x
  3. Step 3: Cross multiply
    303,372.20x = 455,058.30 × 81,756.20
  4. Step 4: Simplify right side
    303,372.20x = 37,203,835,111.17
  5. Step 5: Solve for x
    x = 37,203,835,111.17/303,372.20
  6. Step 6: Final answer
    x = 122,634.29

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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.