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Finding the Fourth Proportional to 201,518.80, 302,278.20 and 61,277.20

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Solution

The fourth proportional to 201,518.80, 302,278.20 and 61,277.20 is: 91,915.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,518.80 : 302,278.20 = 61,277.20 : x
  2. Step 2: Convert to fraction form
    201,518.80/302,278.20 = 61,277.20/x
  3. Step 3: Cross multiply
    201,518.80x = 302,278.20 × 61,277.20
  4. Step 4: Simplify right side
    201,518.80x = 18,522,761,717.04
  5. Step 5: Solve for x
    x = 18,522,761,717.04/201,518.80
  6. Step 6: Final answer
    x = 91,915.80

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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.