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Finding the Fourth Proportional to 307,713.15, 461,569.73 and 188,999.55

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Solution

The fourth proportional to 307,713.15, 461,569.73 and 188,999.55 is: 283,499.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,713.15 : 461,569.73 = 188,999.55 : x
  2. Step 2: Convert to fraction form
    307,713.15/461,569.73 = 188,999.55/x
  3. Step 3: Cross multiply
    307,713.15x = 461,569.73 × 188,999.55
  4. Step 4: Simplify right side
    307,713.15x = 87,236,470,318.62
  5. Step 5: Solve for x
    x = 87,236,470,318.62/307,713.15
  6. Step 6: Final answer
    x = 283,499.33

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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.