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Finding the Fourth Proportional to 318,656.25, 477,984.38 and 118,992.22

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Solution

The fourth proportional to 318,656.25, 477,984.38 and 118,992.22 is: 178,488.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,656.25 : 477,984.38 = 118,992.22 : x
  2. Step 2: Convert to fraction form
    318,656.25/477,984.38 = 118,992.22/x
  3. Step 3: Cross multiply
    318,656.25x = 477,984.38 × 118,992.22
  4. Step 4: Simplify right side
    318,656.25x = 56,876,422,501.52
  5. Step 5: Solve for x
    x = 56,876,422,501.52/318,656.25
  6. Step 6: Final answer
    x = 178,488.33

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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.