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Finding the Fourth Proportional to 318,544.28, 477,899.73 and 118,866.41

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Solution

The fourth proportional to 318,544.28, 477,899.73 and 118,866.41 is: 178,330.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,544.28 : 477,899.73 = 118,866.41 : x
  2. Step 2: Convert to fraction form
    318,544.28/477,899.73 = 118,866.41/x
  3. Step 3: Cross multiply
    318,544.28x = 477,899.73 × 118,866.41
  4. Step 4: Simplify right side
    318,544.28x = 56,806,222,855.57
  5. Step 5: Solve for x
    x = 56,806,222,855.57/318,544.28
  6. Step 6: Final answer
    x = 178,330.70

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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.