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Finding the Fourth Proportional to 201,606.80, 302,410.20 and 83,217.20

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Solution

The fourth proportional to 201,606.80, 302,410.20 and 83,217.20 is: 124,825.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,606.80 : 302,410.20 = 83,217.20 : x
  2. Step 2: Convert to fraction form
    201,606.80/302,410.20 = 83,217.20/x
  3. Step 3: Cross multiply
    201,606.80x = 302,410.20 × 83,217.20
  4. Step 4: Simplify right side
    201,606.80x = 25,165,730,095.44
  5. Step 5: Solve for x
    x = 25,165,730,095.44/201,606.80
  6. Step 6: Final answer
    x = 124,825.80

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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.