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Finding the Fourth Proportional to 208,401.01, 287,593.68 and 112,907.71

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Solution

The fourth proportional to 208,401.01, 287,593.68 and 112,907.71 is: 155,812.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,401.01 : 287,593.68 = 112,907.71 : x
  2. Step 2: Convert to fraction form
    208,401.01/287,593.68 = 112,907.71/x
  3. Step 3: Cross multiply
    208,401.01x = 287,593.68 × 112,907.71
  4. Step 4: Simplify right side
    208,401.01x = 32,471,542,381.30
  5. Step 5: Solve for x
    x = 32,471,542,381.30/208,401.01
  6. Step 6: Final answer
    x = 155,812.79

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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.