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Finding the Fourth Proportional to 323,606.24, 485,364 and 136,574

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Solution

The fourth proportional to 323,606.24, 485,364 and 136,574 is: 204,841.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,606.24 : 485,364 = 136,574 : x
  2. Step 2: Convert to fraction form
    323,606.24/485,364 = 136,574/x
  3. Step 3: Cross multiply
    323,606.24x = 485,364 × 136,574
  4. Step 4: Simplify right side
    323,606.24x = 66,288,102,936
  5. Step 5: Solve for x
    x = 66,288,102,936/323,606.24
  6. Step 6: Final answer
    x = 204,841.86

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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.