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Finding the Fourth Proportional to 329,867.42, 455,217.91 and 178,964.42

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Solution

The fourth proportional to 329,867.42, 455,217.91 and 178,964.42 is: 246,971.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,867.42 : 455,217.91 = 178,964.42 : x
  2. Step 2: Convert to fraction form
    329,867.42/455,217.91 = 178,964.42/x
  3. Step 3: Cross multiply
    329,867.42x = 455,217.91 × 178,964.42
  4. Step 4: Simplify right side
    329,867.42x = 81,467,806,513.26
  5. Step 5: Solve for x
    x = 81,467,806,513.26/329,867.42
  6. Step 6: Final answer
    x = 246,971.37

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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.