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Finding the Fourth Proportional to 631,491.40, 947,215.26 and 158,180.84

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Solution

The fourth proportional to 631,491.40, 947,215.26 and 158,180.84 is: 237,265.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,491.40 : 947,215.26 = 158,180.84 : x
  2. Step 2: Convert to fraction form
    631,491.40/947,215.26 = 158,180.84/x
  3. Step 3: Cross multiply
    631,491.40x = 947,215.26 × 158,180.84
  4. Step 4: Simplify right side
    631,491.40x = 149,831,305,487.62
  5. Step 5: Solve for x
    x = 149,831,305,487.62/631,491.40
  6. Step 6: Final answer
    x = 237,265.79

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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.