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Finding the Fourth Proportional to 447,229.65, 671,155.53 and 289,065.81

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Solution

The fourth proportional to 447,229.65, 671,155.53 and 289,065.81 is: 433,799.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,229.65 : 671,155.53 = 289,065.81 : x
  2. Step 2: Convert to fraction form
    447,229.65/671,155.53 = 289,065.81/x
  3. Step 3: Cross multiply
    447,229.65x = 671,155.53 × 289,065.81
  4. Step 4: Simplify right side
    447,229.65x = 194,008,116,915.43
  5. Step 5: Solve for x
    x = 194,008,116,915.43/447,229.65
  6. Step 6: Final answer
    x = 433,799.76

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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.