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Finding the Fourth Proportional to 266,060.32, 399,107.76 and 79,056.16

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Solution

The fourth proportional to 266,060.32, 399,107.76 and 79,056.16 is: 118,589.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,060.32 : 399,107.76 = 79,056.16 : x
  2. Step 2: Convert to fraction form
    266,060.32/399,107.76 = 79,056.16/x
  3. Step 3: Cross multiply
    266,060.32x = 399,107.76 × 79,056.16
  4. Step 4: Simplify right side
    266,060.32x = 31,551,926,931.80
  5. Step 5: Solve for x
    x = 31,551,926,931.80/266,060.32
  6. Step 6: Final answer
    x = 118,589.37

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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.