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Finding the Fourth Proportional to 216,735.40, 325,103.10 and 68,991.40

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Solution

The fourth proportional to 216,735.40, 325,103.10 and 68,991.40 is: 103,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,735.40 : 325,103.10 = 68,991.40 : x
  2. Step 2: Convert to fraction form
    216,735.40/325,103.10 = 68,991.40/x
  3. Step 3: Cross multiply
    216,735.40x = 325,103.10 × 68,991.40
  4. Step 4: Simplify right side
    216,735.40x = 22,429,318,013.34
  5. Step 5: Solve for x
    x = 22,429,318,013.34/216,735.40
  6. Step 6: Final answer
    x = 103,487.10

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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.