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Finding the Fourth Proportional to 216,823.64, 325,162.50 and 72,700.28

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Solution

The fourth proportional to 216,823.64, 325,162.50 and 72,700.28 is: 109,025.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,823.64 : 325,162.50 = 72,700.28 : x
  2. Step 2: Convert to fraction form
    216,823.64/325,162.50 = 72,700.28/x
  3. Step 3: Cross multiply
    216,823.64x = 325,162.50 × 72,700.28
  4. Step 4: Simplify right side
    216,823.64x = 23,639,404,795.50
  5. Step 5: Solve for x
    x = 23,639,404,795.50/216,823.64
  6. Step 6: Final answer
    x = 109,025.96

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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.