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Finding the Fourth Proportional to 245,188.60, 338,360.57 and 137,758.57

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Solution

The fourth proportional to 245,188.60, 338,360.57 and 137,758.57 is: 190,106.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,188.60 : 338,360.57 = 137,758.57 : x
  2. Step 2: Convert to fraction form
    245,188.60/338,360.57 = 137,758.57/x
  3. Step 3: Cross multiply
    245,188.60x = 338,360.57 × 137,758.57
  4. Step 4: Simplify right side
    245,188.60x = 46,612,067,578.79
  5. Step 5: Solve for x
    x = 46,612,067,578.79/245,188.60
  6. Step 6: Final answer
    x = 190,106.99

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1.5x scale

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.