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Finding the Fourth Proportional to 371,280.79, 512,353.79 and 201,511.27

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Solution

The fourth proportional to 371,280.79, 512,353.79 and 201,511.27 is: 278,078.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,280.79 : 512,353.79 = 201,511.27 : x
  2. Step 2: Convert to fraction form
    371,280.79/512,353.79 = 201,511.27/x
  3. Step 3: Cross multiply
    371,280.79x = 512,353.79 × 201,511.27
  4. Step 4: Simplify right side
    371,280.79x = 103,245,061,904.66
  5. Step 5: Solve for x
    x = 103,245,061,904.66/371,280.79
  6. Step 6: Final answer
    x = 278,078.11

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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.