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Finding the Fourth Proportional to 216,049.40, 324,030.90 and 103,729.40

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Solution

The fourth proportional to 216,049.40, 324,030.90 and 103,729.40 is: 155,573.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,049.40 : 324,030.90 = 103,729.40 : x
  2. Step 2: Convert to fraction form
    216,049.40/324,030.90 = 103,729.40/x
  3. Step 3: Cross multiply
    216,049.40x = 324,030.90 × 103,729.40
  4. Step 4: Simplify right side
    216,049.40x = 33,611,530,838.46
  5. Step 5: Solve for x
    x = 33,611,530,838.46/216,049.40
  6. Step 6: Final answer
    x = 155,573.36

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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.