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Finding the Fourth Proportional to 371,690.64, 512,932.68 and 201,923.64

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Solution

The fourth proportional to 371,690.64, 512,932.68 and 201,923.64 is: 278,654.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,690.64 : 512,932.68 = 201,923.64 : x
  2. Step 2: Convert to fraction form
    371,690.64/512,932.68 = 201,923.64/x
  3. Step 3: Cross multiply
    371,690.64x = 512,932.68 × 201,923.64
  4. Step 4: Simplify right side
    371,690.64x = 103,573,233,820.56
  5. Step 5: Solve for x
    x = 103,573,233,820.56/371,690.64
  6. Step 6: Final answer
    x = 278,654.40

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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.