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Finding the Fourth Proportional to 371,140.30, 512,179.57 and 201,374.43

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Solution

The fourth proportional to 371,140.30, 512,179.57 and 201,374.43 is: 277,899.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,140.30 : 512,179.57 = 201,374.43 : x
  2. Step 2: Convert to fraction form
    371,140.30/512,179.57 = 201,374.43/x
  3. Step 3: Cross multiply
    371,140.30x = 512,179.57 × 201,374.43
  4. Step 4: Simplify right side
    371,140.30x = 103,139,868,966.40
  5. Step 5: Solve for x
    x = 103,139,868,966.40/371,140.30
  6. Step 6: Final answer
    x = 277,899.95

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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.