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Finding the Fourth Proportional to 245,378.66, 338,617.70 and 136,480.65

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Solution

The fourth proportional to 245,378.66, 338,617.70 and 136,480.65 is: 188,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,378.66 : 338,617.70 = 136,480.65 : x
  2. Step 2: Convert to fraction form
    245,378.66/338,617.70 = 136,480.65/x
  3. Step 3: Cross multiply
    245,378.66x = 338,617.70 × 136,480.65
  4. Step 4: Simplify right side
    245,378.66x = 46,214,764,263.95
  5. Step 5: Solve for x
    x = 46,214,764,263.95/245,378.66
  6. Step 6: Final answer
    x = 188,340.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.