Home / 287,704.23-431,680.83-154,428.85

Finding the Fourth Proportional to 287,704.23, 431,680.83 and 154,428.85

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Solution

The fourth proportional to 287,704.23, 431,680.83 and 154,428.85 is: 231,710.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,704.23 : 431,680.83 = 154,428.85 : x
  2. Step 2: Convert to fraction form
    287,704.23/431,680.83 = 154,428.85/x
  3. Step 3: Cross multiply
    287,704.23x = 431,680.83 × 154,428.85
  4. Step 4: Simplify right side
    287,704.23x = 66,663,974,104.44
  5. Step 5: Solve for x
    x = 66,663,974,104.44/287,704.23
  6. Step 6: Final answer
    x = 231,710.10

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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.