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Finding the Fourth Proportional to 404,456.70, 606,685.05 and 205,391.10

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Solution

The fourth proportional to 404,456.70, 606,685.05 and 205,391.10 is: 308,086.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,456.70 : 606,685.05 = 205,391.10 : x
  2. Step 2: Convert to fraction form
    404,456.70/606,685.05 = 205,391.10/x
  3. Step 3: Cross multiply
    404,456.70x = 606,685.05 × 205,391.10
  4. Step 4: Simplify right side
    404,456.70x = 124,607,709,773.06
  5. Step 5: Solve for x
    x = 124,607,709,773.06/404,456.70
  6. Step 6: Final answer
    x = 308,086.65

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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.