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Finding the Fourth Proportional to 266,509.20, 399,245.40 and 161,014.80

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Solution

The fourth proportional to 266,509.20, 399,245.40 and 161,014.80 is: 241,209.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,509.20 : 399,245.40 = 161,014.80 : x
  2. Step 2: Convert to fraction form
    266,509.20/399,245.40 = 161,014.80/x
  3. Step 3: Cross multiply
    266,509.20x = 399,245.40 × 161,014.80
  4. Step 4: Simplify right side
    266,509.20x = 64,284,418,231.92
  5. Step 5: Solve for x
    x = 64,284,418,231.92/266,509.20
  6. Step 6: Final answer
    x = 241,209.00

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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.