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Finding the Fourth Proportional to 214,639.57, 321,959.36 and 74,398.20

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Solution

The fourth proportional to 214,639.57, 321,959.36 and 74,398.20 is: 111,597.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,639.57 : 321,959.36 = 74,398.20 : x
  2. Step 2: Convert to fraction form
    214,639.57/321,959.36 = 74,398.20/x
  3. Step 3: Cross multiply
    214,639.57x = 321,959.36 × 74,398.20
  4. Step 4: Simplify right side
    214,639.57x = 23,953,196,857.15
  5. Step 5: Solve for x
    x = 23,953,196,857.15/214,639.57
  6. Step 6: Final answer
    x = 111,597.30

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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.