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Finding the Fourth Proportional to 266,104.80, 398,005.20 and 238,226.40

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Solution

The fourth proportional to 266,104.80, 398,005.20 and 238,226.40 is: 356,308.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,104.80 : 398,005.20 = 238,226.40 : x
  2. Step 2: Convert to fraction form
    266,104.80/398,005.20 = 238,226.40/x
  3. Step 3: Cross multiply
    266,104.80x = 398,005.20 × 238,226.40
  4. Step 4: Simplify right side
    266,104.80x = 94,815,345,977.28
  5. Step 5: Solve for x
    x = 94,815,345,977.28/266,104.80
  6. Step 6: Final answer
    x = 356,308.29

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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.