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Finding the Fourth Proportional to 239,513.91, 330,514.17 and 137,467.58

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Solution

The fourth proportional to 239,513.91, 330,514.17 and 137,467.58 is: 189,696.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,513.91 : 330,514.17 = 137,467.58 : x
  2. Step 2: Convert to fraction form
    239,513.91/330,514.17 = 137,467.58/x
  3. Step 3: Cross multiply
    239,513.91x = 330,514.17 × 137,467.58
  4. Step 4: Simplify right side
    239,513.91x = 45,434,983,569.93
  5. Step 5: Solve for x
    x = 45,434,983,569.93/239,513.91
  6. Step 6: Final answer
    x = 189,696.64

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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.