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Finding the Fourth Proportional to 217,314.40, 325,712.40 and 112,079.20

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Solution

The fourth proportional to 217,314.40, 325,712.40 and 112,079.20 is: 167,985.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,314.40 : 325,712.40 = 112,079.20 : x
  2. Step 2: Convert to fraction form
    217,314.40/325,712.40 = 112,079.20/x
  3. Step 3: Cross multiply
    217,314.40x = 325,712.40 × 112,079.20
  4. Step 4: Simplify right side
    217,314.40x = 36,505,585,222.08
  5. Step 5: Solve for x
    x = 36,505,585,222.08/217,314.40
  6. Step 6: Final answer
    x = 167,985.12

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.