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Finding the Fourth Proportional to 358,020.88, 536,991.22 and 91,787.65

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Solution

The fourth proportional to 358,020.88, 536,991.22 and 91,787.65 is: 137,671.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,020.88 : 536,991.22 = 91,787.65 : x
  2. Step 2: Convert to fraction form
    358,020.88/536,991.22 = 91,787.65/x
  3. Step 3: Cross multiply
    358,020.88x = 536,991.22 × 91,787.65
  4. Step 4: Simplify right side
    358,020.88x = 49,289,160,926.69
  5. Step 5: Solve for x
    x = 49,289,160,926.69/358,020.88
  6. Step 6: Final answer
    x = 137,671.19

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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.