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Finding the Fourth Proportional to 266,041.53, 399,127.91 and 79,053.03

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Solution

The fourth proportional to 266,041.53, 399,127.91 and 79,053.03 is: 118,599.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,041.53 : 399,127.91 = 79,053.03 : x
  2. Step 2: Convert to fraction form
    266,041.53/399,127.91 = 79,053.03/x
  3. Step 3: Cross multiply
    266,041.53x = 399,127.91 × 79,053.03
  4. Step 4: Simplify right side
    266,041.53x = 31,552,270,247.80
  5. Step 5: Solve for x
    x = 31,552,270,247.80/266,041.53
  6. Step 6: Final answer
    x = 118,599.04

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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.