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Finding the Fourth Proportional to 631,309, 946,965.94 and 157,993.06

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Solution

The fourth proportional to 631,309, 946,965.94 and 157,993.06 is: 236,990.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,309 : 946,965.94 = 157,993.06 : x
  2. Step 2: Convert to fraction form
    631,309/946,965.94 = 157,993.06/x
  3. Step 3: Cross multiply
    631,309x = 946,965.94 × 157,993.06
  4. Step 4: Simplify right side
    631,309x = 149,614,046,576.38
  5. Step 5: Solve for x
    x = 149,614,046,576.38/631,309
  6. Step 6: Final answer
    x = 236,990.20

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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.