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Finding the Fourth Proportional to 216,528, 324,753.64 and 58,768.72

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Solution

The fourth proportional to 216,528, 324,753.64 and 58,768.72 is: 88,142.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,528 : 324,753.64 = 58,768.72 : x
  2. Step 2: Convert to fraction form
    216,528/324,753.64 = 58,768.72/x
  3. Step 3: Cross multiply
    216,528x = 324,753.64 × 58,768.72
  4. Step 4: Simplify right side
    216,528x = 19,085,355,738.14
  5. Step 5: Solve for x
    x = 19,085,355,738.14/216,528
  6. Step 6: Final answer
    x = 88,142.67

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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.