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Finding the Fourth Proportional to 266,608.97, 399,946.71 and 122,480.20

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Solution

The fourth proportional to 266,608.97, 399,946.71 and 122,480.20 is: 183,735.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,608.97 : 399,946.71 = 122,480.20 : x
  2. Step 2: Convert to fraction form
    266,608.97/399,946.71 = 122,480.20/x
  3. Step 3: Cross multiply
    266,608.97x = 399,946.71 × 122,480.20
  4. Step 4: Simplify right side
    266,608.97x = 48,985,553,989.38
  5. Step 5: Solve for x
    x = 48,985,553,989.38/266,608.97
  6. Step 6: Final answer
    x = 183,735.58

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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.