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Finding the Fourth Proportional to 321,427.71, 480,722.45 and 194,717.79

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Solution

The fourth proportional to 321,427.71, 480,722.45 and 194,717.79 is: 291,217.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,427.71 : 480,722.45 = 194,717.79 : x
  2. Step 2: Convert to fraction form
    321,427.71/480,722.45 = 194,717.79/x
  3. Step 3: Cross multiply
    321,427.71x = 480,722.45 × 194,717.79
  4. Step 4: Simplify right side
    321,427.71x = 93,605,212,093.80
  5. Step 5: Solve for x
    x = 93,605,212,093.80/321,427.71
  6. Step 6: Final answer
    x = 291,217.00

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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.