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Finding the Fourth Proportional to 266,772.69, 398,257.41 and 257,428.73

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Solution

The fourth proportional to 266,772.69, 398,257.41 and 257,428.73 is: 384,308.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,772.69 : 398,257.41 = 257,428.73 : x
  2. Step 2: Convert to fraction form
    266,772.69/398,257.41 = 257,428.73/x
  3. Step 3: Cross multiply
    266,772.69x = 398,257.41 × 257,428.73
  4. Step 4: Simplify right side
    266,772.69x = 102,522,899,782.35
  5. Step 5: Solve for x
    x = 102,522,899,782.35/266,772.69
  6. Step 6: Final answer
    x = 384,308.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.