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Finding the Fourth Proportional to 266,200.80, 399,301.20 and 79,212.30

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Solution

The fourth proportional to 266,200.80, 399,301.20 and 79,212.30 is: 118,818.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,200.80 : 399,301.20 = 79,212.30 : x
  2. Step 2: Convert to fraction form
    266,200.80/399,301.20 = 79,212.30/x
  3. Step 3: Cross multiply
    266,200.80x = 399,301.20 × 79,212.30
  4. Step 4: Simplify right side
    266,200.80x = 31,629,566,444.76
  5. Step 5: Solve for x
    x = 31,629,566,444.76/266,200.80
  6. Step 6: Final answer
    x = 118,818.45

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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.