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Finding the Fourth Proportional to 266,627.80, 399,999.30 and 79,658.20

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Solution

The fourth proportional to 266,627.80, 399,999.30 and 79,658.20 is: 119,504.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,627.80 : 399,999.30 = 79,658.20 : x
  2. Step 2: Convert to fraction form
    266,627.80/399,999.30 = 79,658.20/x
  3. Step 3: Cross multiply
    266,627.80x = 399,999.30 × 79,658.20
  4. Step 4: Simplify right side
    266,627.80x = 31,863,224,239.26
  5. Step 5: Solve for x
    x = 31,863,224,239.26/266,627.80
  6. Step 6: Final answer
    x = 119,504.51

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1.5x scale

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.