Home / 211,508.76-316,840.12-127,222.36

Finding the Fourth Proportional to 211,508.76, 316,840.12 and 127,222.36

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Solution

The fourth proportional to 211,508.76, 316,840.12 and 127,222.36 is: 190,579.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,508.76 : 316,840.12 = 127,222.36 : x
  2. Step 2: Convert to fraction form
    211,508.76/316,840.12 = 127,222.36/x
  3. Step 3: Cross multiply
    211,508.76x = 316,840.12 × 127,222.36
  4. Step 4: Simplify right side
    211,508.76x = 40,309,147,809.08
  5. Step 5: Solve for x
    x = 40,309,147,809.08/211,508.76
  6. Step 6: Final answer
    x = 190,579.09

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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.