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Finding the Fourth Proportional to 286,363.71, 395,272.58 and 201,728.43

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Solution

The fourth proportional to 286,363.71, 395,272.58 and 201,728.43 is: 278,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,363.71 : 395,272.58 = 201,728.43 : x
  2. Step 2: Convert to fraction form
    286,363.71/395,272.58 = 201,728.43/x
  3. Step 3: Cross multiply
    286,363.71x = 395,272.58 × 201,728.43
  4. Step 4: Simplify right side
    286,363.71x = 79,737,715,976.81
  5. Step 5: Solve for x
    x = 79,737,715,976.81/286,363.71
  6. Step 6: Final answer
    x = 278,449.10

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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.