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Finding the Fourth Proportional to 394,479.16, 591,310.50 and 194,532.28

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Solution

The fourth proportional to 394,479.16, 591,310.50 and 194,532.28 is: 291,597.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,479.16 : 591,310.50 = 194,532.28 : x
  2. Step 2: Convert to fraction form
    394,479.16/591,310.50 = 194,532.28/x
  3. Step 3: Cross multiply
    394,479.16x = 591,310.50 × 194,532.28
  4. Step 4: Simplify right side
    394,479.16x = 115,028,979,752.94
  5. Step 5: Solve for x
    x = 115,028,979,752.94/394,479.16
  6. Step 6: Final answer
    x = 291,597.10

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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.