Home / 211,221.28-291,387.65-187,046.88

Finding the Fourth Proportional to 211,221.28, 291,387.65 and 187,046.88

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Solution

The fourth proportional to 211,221.28, 291,387.65 and 187,046.88 is: 258,038.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,221.28 : 291,387.65 = 187,046.88 : x
  2. Step 2: Convert to fraction form
    211,221.28/291,387.65 = 187,046.88/x
  3. Step 3: Cross multiply
    211,221.28x = 291,387.65 × 187,046.88
  4. Step 4: Simplify right side
    211,221.28x = 54,503,150,803.03
  5. Step 5: Solve for x
    x = 54,503,150,803.03/211,221.28
  6. Step 6: Final answer
    x = 258,038.16

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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.