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Finding the Fourth Proportional to 266,174.80, 398,801.40 and 172,632.40

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Solution

The fourth proportional to 266,174.80, 398,801.40 and 172,632.40 is: 258,649.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,174.80 : 398,801.40 = 172,632.40 : x
  2. Step 2: Convert to fraction form
    266,174.80/398,801.40 = 172,632.40/x
  3. Step 3: Cross multiply
    266,174.80x = 398,801.40 × 172,632.40
  4. Step 4: Simplify right side
    266,174.80x = 68,846,042,805.36
  5. Step 5: Solve for x
    x = 68,846,042,805.36/266,174.80
  6. Step 6: Final answer
    x = 258,649.74

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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.