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Finding the Fourth Proportional to 216,821.80, 325,232.70 and 201,075.40

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Solution

The fourth proportional to 216,821.80, 325,232.70 and 201,075.40 is: 301,613.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,821.80 : 325,232.70 = 201,075.40 : x
  2. Step 2: Convert to fraction form
    216,821.80/325,232.70 = 201,075.40/x
  3. Step 3: Cross multiply
    216,821.80x = 325,232.70 × 201,075.40
  4. Step 4: Simplify right side
    216,821.80x = 65,396,295,245.58
  5. Step 5: Solve for x
    x = 65,396,295,245.58/216,821.80
  6. Step 6: Final answer
    x = 301,613.10

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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.