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Finding the Fourth Proportional to 287,089.92, 395,773.50 and 201,942.72

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Solution

The fourth proportional to 287,089.92, 395,773.50 and 201,942.72 is: 278,392.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,089.92 : 395,773.50 = 201,942.72 : x
  2. Step 2: Convert to fraction form
    287,089.92/395,773.50 = 201,942.72/x
  3. Step 3: Cross multiply
    287,089.92x = 395,773.50 × 201,942.72
  4. Step 4: Simplify right side
    287,089.92x = 79,923,577,093.92
  5. Step 5: Solve for x
    x = 79,923,577,093.92/287,089.92
  6. Step 6: Final answer
    x = 278,392.14

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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.