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Finding the Fourth Proportional to 216,521, 324,743.16 and 58,761.72

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Solution

The fourth proportional to 216,521, 324,743.16 and 58,761.72 is: 88,132.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,521 : 324,743.16 = 58,761.72 : x
  2. Step 2: Convert to fraction form
    216,521/324,743.16 = 58,761.72/x
  3. Step 3: Cross multiply
    216,521x = 324,743.16 × 58,761.72
  4. Step 4: Simplify right side
    216,521x = 19,082,466,639.84
  5. Step 5: Solve for x
    x = 19,082,466,639.84/216,521
  6. Step 6: Final answer
    x = 88,132.17

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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.