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Finding the Fourth Proportional to 286,717.34, 395,680.07 and 157,665.60

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Solution

The fourth proportional to 286,717.34, 395,680.07 and 157,665.60 is: 217,584.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,717.34 : 395,680.07 = 157,665.60 : x
  2. Step 2: Convert to fraction form
    286,717.34/395,680.07 = 157,665.60/x
  3. Step 3: Cross multiply
    286,717.34x = 395,680.07 × 157,665.60
  4. Step 4: Simplify right side
    286,717.34x = 62,385,135,049.56
  5. Step 5: Solve for x
    x = 62,385,135,049.56/286,717.34
  6. Step 6: Final answer
    x = 217,584.11

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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.