Home / 211,112.64-291,328.92-115,616.88

Finding the Fourth Proportional to 211,112.64, 291,328.92 and 115,616.88

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Solution

The fourth proportional to 211,112.64, 291,328.92 and 115,616.88 is: 159,547.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,112.64 : 291,328.92 = 115,616.88 : x
  2. Step 2: Convert to fraction form
    211,112.64/291,328.92 = 115,616.88/x
  3. Step 3: Cross multiply
    211,112.64x = 291,328.92 × 115,616.88
  4. Step 4: Simplify right side
    211,112.64x = 33,682,540,784.17
  5. Step 5: Solve for x
    x = 33,682,540,784.17/211,112.64
  6. Step 6: Final answer
    x = 159,547.72

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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.