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Finding the Fourth Proportional to 201,678.40, 302,517.60 and 83,310.40

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Solution

The fourth proportional to 201,678.40, 302,517.60 and 83,310.40 is: 124,965.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,678.40 : 302,517.60 = 83,310.40 : x
  2. Step 2: Convert to fraction form
    201,678.40/302,517.60 = 83,310.40/x
  3. Step 3: Cross multiply
    201,678.40x = 302,517.60 × 83,310.40
  4. Step 4: Simplify right side
    201,678.40x = 25,202,862,263.04
  5. Step 5: Solve for x
    x = 25,202,862,263.04/201,678.40
  6. Step 6: Final answer
    x = 124,965.60

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1.5x scale

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.