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Finding the Fourth Proportional to 318,501.76, 477,736.96 and 118,806.80

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Solution

The fourth proportional to 318,501.76, 477,736.96 and 118,806.80 is: 178,204.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,501.76 : 477,736.96 = 118,806.80 : x
  2. Step 2: Convert to fraction form
    318,501.76/477,736.96 = 118,806.80/x
  3. Step 3: Cross multiply
    318,501.76x = 477,736.96 × 118,806.80
  4. Step 4: Simplify right side
    318,501.76x = 56,758,399,459.33
  5. Step 5: Solve for x
    x = 56,758,399,459.33/318,501.76
  6. Step 6: Final answer
    x = 178,204.35

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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.