Home / 211,642.08-317,459.62-85,279.24

Finding the Fourth Proportional to 211,642.08, 317,459.62 and 85,279.24

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Solution

The fourth proportional to 211,642.08, 317,459.62 and 85,279.24 is: 127,917.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,642.08 : 317,459.62 = 85,279.24 : x
  2. Step 2: Convert to fraction form
    211,642.08/317,459.62 = 85,279.24/x
  3. Step 3: Cross multiply
    211,642.08x = 317,459.62 × 85,279.24
  4. Step 4: Simplify right side
    211,642.08x = 27,072,715,124.29
  5. Step 5: Solve for x
    x = 27,072,715,124.29/211,642.08
  6. Step 6: Final answer
    x = 127,917.45

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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.