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Finding the Fourth Proportional to 217,510.80, 325,651.80 and 211,366.80

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Solution

The fourth proportional to 217,510.80, 325,651.80 and 211,366.80 is: 316,453.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,510.80 : 325,651.80 = 211,366.80 : x
  2. Step 2: Convert to fraction form
    217,510.80/325,651.80 = 211,366.80/x
  3. Step 3: Cross multiply
    217,510.80x = 325,651.80 × 211,366.80
  4. Step 4: Simplify right side
    217,510.80x = 68,831,978,880.24
  5. Step 5: Solve for x
    x = 68,831,978,880.24/217,510.80
  6. Step 6: Final answer
    x = 316,453.15

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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.