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Finding the Fourth Proportional to 201,625.80, 302,438.70 and 61,384.20

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Solution

The fourth proportional to 201,625.80, 302,438.70 and 61,384.20 is: 92,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,625.80 : 302,438.70 = 61,384.20 : x
  2. Step 2: Convert to fraction form
    201,625.80/302,438.70 = 61,384.20/x
  3. Step 3: Cross multiply
    201,625.80x = 302,438.70 × 61,384.20
  4. Step 4: Simplify right side
    201,625.80x = 18,564,957,648.54
  5. Step 5: Solve for x
    x = 18,564,957,648.54/201,625.80
  6. Step 6: Final answer
    x = 92,076.30

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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.