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Finding the Fourth Proportional to 207,907.79, 311,862.69 and 58,161.15

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Solution

The fourth proportional to 207,907.79, 311,862.69 and 58,161.15 is: 87,242.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,907.79 : 311,862.69 = 58,161.15 : x
  2. Step 2: Convert to fraction form
    207,907.79/311,862.69 = 58,161.15/x
  3. Step 3: Cross multiply
    207,907.79x = 311,862.69 × 58,161.15
  4. Step 4: Simplify right side
    207,907.79x = 18,138,292,692.49
  5. Step 5: Solve for x
    x = 18,138,292,692.49/207,907.79
  6. Step 6: Final answer
    x = 87,242.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.