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Finding the Fourth Proportional to 217,246.80, 325,870.20 and 190,981.20

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Solution

The fourth proportional to 217,246.80, 325,870.20 and 190,981.20 is: 286,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,246.80 : 325,870.20 = 190,981.20 : x
  2. Step 2: Convert to fraction form
    217,246.80/325,870.20 = 190,981.20/x
  3. Step 3: Cross multiply
    217,246.80x = 325,870.20 × 190,981.20
  4. Step 4: Simplify right side
    217,246.80x = 62,235,081,840.24
  5. Step 5: Solve for x
    x = 62,235,081,840.24/217,246.80
  6. Step 6: Final answer
    x = 286,471.80

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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.