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Finding the Fourth Proportional to 266,048.30, 399,071.40 and 79,059.80

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Solution

The fourth proportional to 266,048.30, 399,071.40 and 79,059.80 is: 118,589.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,048.30 : 399,071.40 = 79,059.80 : x
  2. Step 2: Convert to fraction form
    266,048.30/399,071.40 = 79,059.80/x
  3. Step 3: Cross multiply
    266,048.30x = 399,071.40 × 79,059.80
  4. Step 4: Simplify right side
    266,048.30x = 31,550,505,069.72
  5. Step 5: Solve for x
    x = 31,550,505,069.72/266,048.30
  6. Step 6: Final answer
    x = 118,589.39

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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.