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Finding the Fourth Proportional to 371,187.90, 512,240.70 and 201,422.02

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Solution

The fourth proportional to 371,187.90, 512,240.70 and 201,422.02 is: 277,963.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,187.90 : 512,240.70 = 201,422.02 : x
  2. Step 2: Convert to fraction form
    371,187.90/512,240.70 = 201,422.02/x
  3. Step 3: Cross multiply
    371,187.90x = 512,240.70 × 201,422.02
  4. Step 4: Simplify right side
    371,187.90x = 103,176,556,520.21
  5. Step 5: Solve for x
    x = 103,176,556,520.21/371,187.90
  6. Step 6: Final answer
    x = 277,963.15

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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.