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Finding the Fourth Proportional to 429,775.41, 644,441.61 and 192,915.06

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Solution

The fourth proportional to 429,775.41, 644,441.61 and 192,915.06 is: 289,273.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,775.41 : 644,441.61 = 192,915.06 : x
  2. Step 2: Convert to fraction form
    429,775.41/644,441.61 = 192,915.06/x
  3. Step 3: Cross multiply
    429,775.41x = 644,441.61 × 192,915.06
  4. Step 4: Simplify right side
    429,775.41x = 124,322,491,859.65
  5. Step 5: Solve for x
    x = 124,322,491,859.65/429,775.41
  6. Step 6: Final answer
    x = 289,273.16

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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.