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Finding the Fourth Proportional to 266,586.86, 367,889 and 145,728.20

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Solution

The fourth proportional to 266,586.86, 367,889 and 145,728.20 is: 201,104.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,586.86 : 367,889 = 145,728.20 : x
  2. Step 2: Convert to fraction form
    266,586.86/367,889 = 145,728.20/x
  3. Step 3: Cross multiply
    266,586.86x = 367,889 × 145,728.20
  4. Step 4: Simplify right side
    266,586.86x = 53,611,801,769.80
  5. Step 5: Solve for x
    x = 53,611,801,769.80/266,586.86
  6. Step 6: Final answer
    x = 201,104.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.