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Finding the Fourth Proportional to 323,965.40, 486,166.80 and 211,371.35

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Solution

The fourth proportional to 323,965.40, 486,166.80 and 211,371.35 is: 317,199.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,965.40 : 486,166.80 = 211,371.35 : x
  2. Step 2: Convert to fraction form
    323,965.40/486,166.80 = 211,371.35/x
  3. Step 3: Cross multiply
    323,965.40x = 486,166.80 × 211,371.35
  4. Step 4: Simplify right side
    323,965.40x = 102,761,732,841.18
  5. Step 5: Solve for x
    x = 102,761,732,841.18/323,965.40
  6. Step 6: Final answer
    x = 317,199.72

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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.