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Finding the Fourth Proportional to 559,974.20, 839,961.30 and 204,999.80

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Solution

The fourth proportional to 559,974.20, 839,961.30 and 204,999.80 is: 307,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,974.20 : 839,961.30 = 204,999.80 : x
  2. Step 2: Convert to fraction form
    559,974.20/839,961.30 = 204,999.80/x
  3. Step 3: Cross multiply
    559,974.20x = 839,961.30 × 204,999.80
  4. Step 4: Simplify right side
    559,974.20x = 172,191,898,507.74
  5. Step 5: Solve for x
    x = 172,191,898,507.74/559,974.20
  6. Step 6: Final answer
    x = 307,499.70

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Double scale
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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.