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Finding the Fourth Proportional to 640,480.24, 960,720.36 and 167,161.48

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Solution

The fourth proportional to 640,480.24, 960,720.36 and 167,161.48 is: 250,742.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,480.24 : 960,720.36 = 167,161.48 : x
  2. Step 2: Convert to fraction form
    640,480.24/960,720.36 = 167,161.48/x
  3. Step 3: Cross multiply
    640,480.24x = 960,720.36 × 167,161.48
  4. Step 4: Simplify right side
    640,480.24x = 160,595,437,243.73
  5. Step 5: Solve for x
    x = 160,595,437,243.73/640,480.24
  6. Step 6: Final answer
    x = 250,742.22

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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.