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Finding the Fourth Proportional to 318,482.88, 477,798.12 and 108,120.81

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Solution

The fourth proportional to 318,482.88, 477,798.12 and 108,120.81 is: 162,206.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,482.88 : 477,798.12 = 108,120.81 : x
  2. Step 2: Convert to fraction form
    318,482.88/477,798.12 = 108,120.81/x
  3. Step 3: Cross multiply
    318,482.88x = 477,798.12 × 108,120.81
  4. Step 4: Simplify right side
    318,482.88x = 51,659,919,750.88
  5. Step 5: Solve for x
    x = 51,659,919,750.88/318,482.88
  6. Step 6: Final answer
    x = 162,206.27

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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.