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Finding the Fourth Proportional to 640,727.70, 961,091.55 and 167,460.90

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Solution

The fourth proportional to 640,727.70, 961,091.55 and 167,460.90 is: 251,191.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,727.70 : 961,091.55 = 167,460.90 : x
  2. Step 2: Convert to fraction form
    640,727.70/961,091.55 = 167,460.90/x
  3. Step 3: Cross multiply
    640,727.70x = 961,091.55 × 167,460.90
  4. Step 4: Simplify right side
    640,727.70x = 160,945,255,945.40
  5. Step 5: Solve for x
    x = 160,945,255,945.40/640,727.70
  6. Step 6: Final answer
    x = 251,191.35

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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.