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Finding the Fourth Proportional to 660,997.40, 991,496.10 and 162,361.40

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Solution

The fourth proportional to 660,997.40, 991,496.10 and 162,361.40 is: 243,542.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,997.40 : 991,496.10 = 162,361.40 : x
  2. Step 2: Convert to fraction form
    660,997.40/991,496.10 = 162,361.40/x
  3. Step 3: Cross multiply
    660,997.40x = 991,496.10 × 162,361.40
  4. Step 4: Simplify right side
    660,997.40x = 160,980,694,890.54
  5. Step 5: Solve for x
    x = 160,980,694,890.54/660,997.40
  6. Step 6: Final answer
    x = 243,542.10

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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.