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Finding the Fourth Proportional to 561,936.30, 842,904.45 and 206,876.85

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Solution

The fourth proportional to 561,936.30, 842,904.45 and 206,876.85 is: 310,315.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,936.30 : 842,904.45 = 206,876.85 : x
  2. Step 2: Convert to fraction form
    561,936.30/842,904.45 = 206,876.85/x
  3. Step 3: Cross multiply
    561,936.30x = 842,904.45 × 206,876.85
  4. Step 4: Simplify right side
    561,936.30x = 174,377,417,466.98
  5. Step 5: Solve for x
    x = 174,377,417,466.98/561,936.30
  6. Step 6: Final answer
    x = 310,315.28

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Similar ratio
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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.