Home / 216,729.60-324,986.88-68,966.40

Finding the Fourth Proportional to 216,729.60, 324,986.88 and 68,966.40

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Solution

The fourth proportional to 216,729.60, 324,986.88 and 68,966.40 is: 103,415.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,729.60 : 324,986.88 = 68,966.40 : x
  2. Step 2: Convert to fraction form
    216,729.60/324,986.88 = 68,966.40/x
  3. Step 3: Cross multiply
    216,729.60x = 324,986.88 × 68,966.40
  4. Step 4: Simplify right side
    216,729.60x = 22,413,175,160.83
  5. Step 5: Solve for x
    x = 22,413,175,160.83/216,729.60
  6. Step 6: Final answer
    x = 103,415.39

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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.