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Finding the Fourth Proportional to 216,909.70, 325,408.48 and 76,766.74

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Solution

The fourth proportional to 216,909.70, 325,408.48 and 76,766.74 is: 115,165.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,909.70 : 325,408.48 = 76,766.74 : x
  2. Step 2: Convert to fraction form
    216,909.70/325,408.48 = 76,766.74/x
  3. Step 3: Cross multiply
    216,909.70x = 325,408.48 × 76,766.74
  4. Step 4: Simplify right side
    216,909.70x = 24,980,548,177.96
  5. Step 5: Solve for x
    x = 24,980,548,177.96/216,909.70
  6. Step 6: Final answer
    x = 115,165.66

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1.5x scale

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.