Home / 211,724.78-317,345.58-85,284.11

Finding the Fourth Proportional to 211,724.78, 317,345.58 and 85,284.11

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Solution

The fourth proportional to 211,724.78, 317,345.58 and 85,284.11 is: 127,828.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,724.78 : 317,345.58 = 85,284.11 : x
  2. Step 2: Convert to fraction form
    211,724.78/317,345.58 = 85,284.11/x
  3. Step 3: Cross multiply
    211,724.78x = 317,345.58 × 85,284.11
  4. Step 4: Simplify right side
    211,724.78x = 27,064,536,146.10
  5. Step 5: Solve for x
    x = 27,064,536,146.10/211,724.78
  6. Step 6: Final answer
    x = 127,828.86

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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.