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Finding the Fourth Proportional to 211,219.66, 316,833.54 and 69,065.47

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Solution

The fourth proportional to 211,219.66, 316,833.54 and 69,065.47 is: 103,599.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,219.66 : 316,833.54 = 69,065.47 : x
  2. Step 2: Convert to fraction form
    211,219.66/316,833.54 = 69,065.47/x
  3. Step 3: Cross multiply
    211,219.66x = 316,833.54 × 69,065.47
  4. Step 4: Simplify right side
    211,219.66x = 21,882,257,351.86
  5. Step 5: Solve for x
    x = 21,882,257,351.86/211,219.66
  6. Step 6: Final answer
    x = 103,599.53

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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.