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Finding the Fourth Proportional to 238,479.45, 329,086.15 and 136,505.71

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Solution

The fourth proportional to 238,479.45, 329,086.15 and 136,505.71 is: 188,369.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,479.45 : 329,086.15 = 136,505.71 : x
  2. Step 2: Convert to fraction form
    238,479.45/329,086.15 = 136,505.71/x
  3. Step 3: Cross multiply
    238,479.45x = 329,086.15 × 136,505.71
  4. Step 4: Simplify right side
    238,479.45x = 44,922,138,556.92
  5. Step 5: Solve for x
    x = 44,922,138,556.92/238,479.45
  6. Step 6: Final answer
    x = 188,369.01

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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.