Home / 661,172.20-991,758.30-211,892.20

Finding the Fourth Proportional to 661,172.20, 991,758.30 and 211,892.20

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Solution

The fourth proportional to 661,172.20, 991,758.30 and 211,892.20 is: 317,838.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,172.20 : 991,758.30 = 211,892.20 : x
  2. Step 2: Convert to fraction form
    661,172.20/991,758.30 = 211,892.20/x
  3. Step 3: Cross multiply
    661,172.20x = 991,758.30 × 211,892.20
  4. Step 4: Simplify right side
    661,172.20x = 210,145,848,055.26
  5. Step 5: Solve for x
    x = 210,145,848,055.26/661,172.20
  6. Step 6: Final answer
    x = 317,838.30

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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.