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Finding the Fourth Proportional to 272,887.45, 409,374.95 and 115,139.14

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Solution

The fourth proportional to 272,887.45, 409,374.95 and 115,139.14 is: 172,727.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,887.45 : 409,374.95 = 115,139.14 : x
  2. Step 2: Convert to fraction form
    272,887.45/409,374.95 = 115,139.14/x
  3. Step 3: Cross multiply
    272,887.45x = 409,374.95 × 115,139.14
  4. Step 4: Simplify right side
    272,887.45x = 47,135,078,081.41
  5. Step 5: Solve for x
    x = 47,135,078,081.41/272,887.45
  6. Step 6: Final answer
    x = 172,727.18

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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.