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Finding the Fourth Proportional to 318,405.33, 477,657.20 and 118,754.10

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Solution

The fourth proportional to 318,405.33, 477,657.20 and 118,754.10 is: 178,149.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,405.33 : 477,657.20 = 118,754.10 : x
  2. Step 2: Convert to fraction form
    318,405.33/477,657.20 = 118,754.10/x
  3. Step 3: Cross multiply
    318,405.33x = 477,657.20 × 118,754.10
  4. Step 4: Simplify right side
    318,405.33x = 56,723,751,191.41
  5. Step 5: Solve for x
    x = 56,723,751,191.41/318,405.33
  6. Step 6: Final answer
    x = 178,149.50

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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.