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Finding the Fourth Proportional to 201,621.70, 302,302.95 and 83,340.10

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Solution

The fourth proportional to 201,621.70, 302,302.95 and 83,340.10 is: 124,956.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,621.70 : 302,302.95 = 83,340.10 : x
  2. Step 2: Convert to fraction form
    201,621.70/302,302.95 = 83,340.10/x
  3. Step 3: Cross multiply
    201,621.70x = 302,302.95 × 83,340.10
  4. Step 4: Simplify right side
    201,621.70x = 25,193,958,083.30
  5. Step 5: Solve for x
    x = 25,193,958,083.30/201,621.70
  6. Step 6: Final answer
    x = 124,956.58

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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.