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Finding the Fourth Proportional to 266,052.51, 399,069.05 and 79,059.15

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Solution

The fourth proportional to 266,052.51, 399,069.05 and 79,059.15 is: 118,585.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,052.51 : 399,069.05 = 79,059.15 : x
  2. Step 2: Convert to fraction form
    266,052.51/399,069.05 = 79,059.15/x
  3. Step 3: Cross multiply
    266,052.51x = 399,069.05 × 79,059.15
  4. Step 4: Simplify right side
    266,052.51x = 31,550,059,489.01
  5. Step 5: Solve for x
    x = 31,550,059,489.01/266,052.51
  6. Step 6: Final answer
    x = 118,585.84

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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.