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Finding the Fourth Proportional to 201,915.60, 302,870.70 and 61,674.90

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Solution

The fourth proportional to 201,915.60, 302,870.70 and 61,674.90 is: 92,511.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,915.60 : 302,870.70 = 61,674.90 : x
  2. Step 2: Convert to fraction form
    201,915.60/302,870.70 = 61,674.90/x
  3. Step 3: Cross multiply
    201,915.60x = 302,870.70 × 61,674.90
  4. Step 4: Simplify right side
    201,915.60x = 18,679,520,135.43
  5. Step 5: Solve for x
    x = 18,679,520,135.43/201,915.60
  6. Step 6: Final answer
    x = 92,511.53

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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.