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Finding the Fourth Proportional to 201,520.10, 302,512.95 and 108,208.10

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Solution

The fourth proportional to 201,520.10, 302,512.95 and 108,208.10 is: 162,437.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,520.10 : 302,512.95 = 108,208.10 : x
  2. Step 2: Convert to fraction form
    201,520.10/302,512.95 = 108,208.10/x
  3. Step 3: Cross multiply
    201,520.10x = 302,512.95 × 108,208.10
  4. Step 4: Simplify right side
    201,520.10x = 32,734,351,544.90
  5. Step 5: Solve for x
    x = 32,734,351,544.90/201,520.10
  6. Step 6: Final answer
    x = 162,437.15

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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.