Home / 211,100.38-291,454.20-188,400.53

Finding the Fourth Proportional to 211,100.38, 291,454.20 and 188,400.53

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Solution

The fourth proportional to 211,100.38, 291,454.20 and 188,400.53 is: 260,113.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,100.38 : 291,454.20 = 188,400.53 : x
  2. Step 2: Convert to fraction form
    211,100.38/291,454.20 = 188,400.53/x
  3. Step 3: Cross multiply
    211,100.38x = 291,454.20 × 188,400.53
  4. Step 4: Simplify right side
    211,100.38x = 54,910,126,479.36
  5. Step 5: Solve for x
    x = 54,910,126,479.36/211,100.38
  6. Step 6: Final answer
    x = 260,113.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.