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Finding the Fourth Proportional to 638,315.16, 957,340.08 and 188,930.58

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Solution

The fourth proportional to 638,315.16, 957,340.08 and 188,930.58 is: 283,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,315.16 : 957,340.08 = 188,930.58 : x
  2. Step 2: Convert to fraction form
    638,315.16/957,340.08 = 188,930.58/x
  3. Step 3: Cross multiply
    638,315.16x = 957,340.08 × 188,930.58
  4. Step 4: Simplify right side
    638,315.16x = 180,870,816,571.65
  5. Step 5: Solve for x
    x = 180,870,816,571.65/638,315.16
  6. Step 6: Final answer
    x = 283,356.60

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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.