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Finding the Fourth Proportional to 206,480.80, 284,937.78 and 121,603.60

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Solution

The fourth proportional to 206,480.80, 284,937.78 and 121,603.60 is: 167,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,480.80 : 284,937.78 = 121,603.60 : x
  2. Step 2: Convert to fraction form
    206,480.80/284,937.78 = 121,603.60/x
  3. Step 3: Cross multiply
    206,480.80x = 284,937.78 × 121,603.60
  4. Step 4: Simplify right side
    206,480.80x = 34,649,459,824.01
  5. Step 5: Solve for x
    x = 34,649,459,824.01/206,480.80
  6. Step 6: Final answer
    x = 167,809.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.