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Finding the Fourth Proportional to 260,953.92, 391,581.54 and 141,011.28

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Solution

The fourth proportional to 260,953.92, 391,581.54 and 141,011.28 is: 211,598.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,953.92 : 391,581.54 = 141,011.28 : x
  2. Step 2: Convert to fraction form
    260,953.92/391,581.54 = 141,011.28/x
  3. Step 3: Cross multiply
    260,953.92x = 391,581.54 × 141,011.28
  4. Step 4: Simplify right side
    260,953.92x = 55,217,414,179.77
  5. Step 5: Solve for x
    x = 55,217,414,179.77/260,953.92
  6. Step 6: Final answer
    x = 211,598.33

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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.