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Finding the Fourth Proportional to 323,492.28, 485,511.06 and 136,637.88

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Solution

The fourth proportional to 323,492.28, 485,511.06 and 136,637.88 is: 205,071.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,492.28 : 485,511.06 = 136,637.88 : x
  2. Step 2: Convert to fraction form
    323,492.28/485,511.06 = 136,637.88/x
  3. Step 3: Cross multiply
    323,492.28x = 485,511.06 × 136,637.88
  4. Step 4: Simplify right side
    323,492.28x = 66,339,201,954.95
  5. Step 5: Solve for x
    x = 66,339,201,954.95/323,492.28
  6. Step 6: Final answer
    x = 205,071.98

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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.