Home / 211,521.40-317,282.10-202,190.20

Finding the Fourth Proportional to 211,521.40, 317,282.10 and 202,190.20

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Solution

The fourth proportional to 211,521.40, 317,282.10 and 202,190.20 is: 303,285.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,521.40 : 317,282.10 = 202,190.20 : x
  2. Step 2: Convert to fraction form
    211,521.40/317,282.10 = 202,190.20/x
  3. Step 3: Cross multiply
    211,521.40x = 317,282.10 × 202,190.20
  4. Step 4: Simplify right side
    211,521.40x = 64,151,331,255.42
  5. Step 5: Solve for x
    x = 64,151,331,255.42/211,521.40
  6. Step 6: Final answer
    x = 303,285.30

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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.