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Finding the Fourth Proportional to 216,969.32, 325,534.02 and 90,622.76

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Solution

The fourth proportional to 216,969.32, 325,534.02 and 90,622.76 is: 135,967.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,969.32 : 325,534.02 = 90,622.76 : x
  2. Step 2: Convert to fraction form
    216,969.32/325,534.02 = 90,622.76/x
  3. Step 3: Cross multiply
    216,969.32x = 325,534.02 × 90,622.76
  4. Step 4: Simplify right side
    216,969.32x = 29,500,791,366.30
  5. Step 5: Solve for x
    x = 29,500,791,366.30/216,969.32
  6. Step 6: Final answer
    x = 135,967.57

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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.