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Finding the Fourth Proportional to 382,238.70, 573,358.05 and 115,986.30

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Solution

The fourth proportional to 382,238.70, 573,358.05 and 115,986.30 is: 173,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,238.70 : 573,358.05 = 115,986.30 : x
  2. Step 2: Convert to fraction form
    382,238.70/573,358.05 = 115,986.30/x
  3. Step 3: Cross multiply
    382,238.70x = 573,358.05 × 115,986.30
  4. Step 4: Simplify right side
    382,238.70x = 66,501,678,794.72
  5. Step 5: Solve for x
    x = 66,501,678,794.72/382,238.70
  6. Step 6: Final answer
    x = 173,979.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.