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Finding the Fourth Proportional to 216,484, 324,440.88 and 91,670.56

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Solution

The fourth proportional to 216,484, 324,440.88 and 91,670.56 is: 137,385.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,484 : 324,440.88 = 91,670.56 : x
  2. Step 2: Convert to fraction form
    216,484/324,440.88 = 91,670.56/x
  3. Step 3: Cross multiply
    216,484x = 324,440.88 × 91,670.56
  4. Step 4: Simplify right side
    216,484x = 29,741,677,156.49
  5. Step 5: Solve for x
    x = 29,741,677,156.49/216,484
  6. Step 6: Final answer
    x = 137,385.11

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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.