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Finding the Fourth Proportional to 334,388.95, 501,591.11 and 81,671.51

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Solution

The fourth proportional to 334,388.95, 501,591.11 and 81,671.51 is: 122,509.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,388.95 : 501,591.11 = 81,671.51 : x
  2. Step 2: Convert to fraction form
    334,388.95/501,591.11 = 81,671.51/x
  3. Step 3: Cross multiply
    334,388.95x = 501,591.11 × 81,671.51
  4. Step 4: Simplify right side
    334,388.95x = 40,965,704,201.90
  5. Step 5: Solve for x
    x = 40,965,704,201.90/334,388.95
  6. Step 6: Final answer
    x = 122,509.15

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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.