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Finding the Fourth Proportional to 216,734.40, 325,101.60 and 68,990.40

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Solution

The fourth proportional to 216,734.40, 325,101.60 and 68,990.40 is: 103,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,734.40 : 325,101.60 = 68,990.40 : x
  2. Step 2: Convert to fraction form
    216,734.40/325,101.60 = 68,990.40/x
  3. Step 3: Cross multiply
    216,734.40x = 325,101.60 × 68,990.40
  4. Step 4: Simplify right side
    216,734.40x = 22,428,889,424.64
  5. Step 5: Solve for x
    x = 22,428,889,424.64/216,734.40
  6. Step 6: Final answer
    x = 103,485.60

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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.