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Finding the Fourth Proportional to 216,320.48, 324,492.24 and 66,663.56

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Solution

The fourth proportional to 216,320.48, 324,492.24 and 66,663.56 is: 99,998.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,320.48 : 324,492.24 = 66,663.56 : x
  2. Step 2: Convert to fraction form
    216,320.48/324,492.24 = 66,663.56/x
  3. Step 3: Cross multiply
    216,320.48x = 324,492.24 × 66,663.56
  4. Step 4: Simplify right side
    216,320.48x = 21,631,807,910.77
  5. Step 5: Solve for x
    x = 21,631,807,910.77/216,320.48
  6. Step 6: Final answer
    x = 99,998.89

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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.