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Finding the Fourth Proportional to 216,642.84, 324,871.32 and 74,502.42

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Solution

The fourth proportional to 216,642.84, 324,871.32 and 74,502.42 is: 111,721.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,642.84 : 324,871.32 = 74,502.42 : x
  2. Step 2: Convert to fraction form
    216,642.84/324,871.32 = 74,502.42/x
  3. Step 3: Cross multiply
    216,642.84x = 324,871.32 × 74,502.42
  4. Step 4: Simplify right side
    216,642.84x = 24,203,699,528.59
  5. Step 5: Solve for x
    x = 24,203,699,528.59/216,642.84
  6. Step 6: Final answer
    x = 111,721.67

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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.