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Finding the Fourth Proportional to 266,038.62, 399,014.18 and 79,006.38

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Solution

The fourth proportional to 266,038.62, 399,014.18 and 79,006.38 is: 118,496.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,038.62 : 399,014.18 = 79,006.38 : x
  2. Step 2: Convert to fraction form
    266,038.62/399,014.18 = 79,006.38/x
  3. Step 3: Cross multiply
    266,038.62x = 399,014.18 × 79,006.38
  4. Step 4: Simplify right side
    266,038.62x = 31,524,665,930.47
  5. Step 5: Solve for x
    x = 31,524,665,930.47/266,038.62
  6. Step 6: Final answer
    x = 118,496.58

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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.