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Finding the Fourth Proportional to 216,143.20, 324,231.20 and 58,369.40

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Solution

The fourth proportional to 216,143.20, 324,231.20 and 58,369.40 is: 87,558.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,143.20 : 324,231.20 = 58,369.40 : x
  2. Step 2: Convert to fraction form
    216,143.20/324,231.20 = 58,369.40/x
  3. Step 3: Cross multiply
    216,143.20x = 324,231.20 × 58,369.40
  4. Step 4: Simplify right side
    216,143.20x = 18,925,180,605.28
  5. Step 5: Solve for x
    x = 18,925,180,605.28/216,143.20
  6. Step 6: Final answer
    x = 87,558.53

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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.