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Finding the Fourth Proportional to 201,765.30, 302,538.60 and 83,302.80

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Solution

The fourth proportional to 201,765.30, 302,538.60 and 83,302.80 is: 124,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,765.30 : 302,538.60 = 83,302.80 : x
  2. Step 2: Convert to fraction form
    201,765.30/302,538.60 = 83,302.80/x
  3. Step 3: Cross multiply
    201,765.30x = 302,538.60 × 83,302.80
  4. Step 4: Simplify right side
    201,765.30x = 25,202,312,488.08
  5. Step 5: Solve for x
    x = 25,202,312,488.08/201,765.30
  6. Step 6: Final answer
    x = 124,909.05

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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.