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Finding the Fourth Proportional to 318,634.77, 477,952.08 and 118,970.73

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Solution

The fourth proportional to 318,634.77, 477,952.08 and 118,970.73 is: 178,456.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,634.77 : 477,952.08 = 118,970.73 : x
  2. Step 2: Convert to fraction form
    318,634.77/477,952.08 = 118,970.73/x
  3. Step 3: Cross multiply
    318,634.77x = 477,952.08 × 118,970.73
  4. Step 4: Simplify right side
    318,634.77x = 56,862,307,862.62
  5. Step 5: Solve for x
    x = 56,862,307,862.62/318,634.77
  6. Step 6: Final answer
    x = 178,456.07

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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.