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Finding the Fourth Proportional to 266,121.30, 399,291.30 and 97,722.30

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Solution

The fourth proportional to 266,121.30, 399,291.30 and 97,722.30 is: 146,623.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,121.30 : 399,291.30 = 97,722.30 : x
  2. Step 2: Convert to fraction form
    266,121.30/399,291.30 = 97,722.30/x
  3. Step 3: Cross multiply
    266,121.30x = 399,291.30 × 97,722.30
  4. Step 4: Simplify right side
    266,121.30x = 39,019,664,205.99
  5. Step 5: Solve for x
    x = 39,019,664,205.99/266,121.30
  6. Step 6: Final answer
    x = 146,623.60

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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.