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Finding the Fourth Proportional to 479,105.84, 718,730.53 and 154,785.56

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Solution

The fourth proportional to 479,105.84, 718,730.53 and 154,785.56 is: 232,201.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,105.84 : 718,730.53 = 154,785.56 : x
  2. Step 2: Convert to fraction form
    479,105.84/718,730.53 = 154,785.56/x
  3. Step 3: Cross multiply
    479,105.84x = 718,730.53 × 154,785.56
  4. Step 4: Simplify right side
    479,105.84x = 111,249,107,575.15
  5. Step 5: Solve for x
    x = 111,249,107,575.15/479,105.84
  6. Step 6: Final answer
    x = 232,201.53

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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.