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Finding the Fourth Proportional to 219,859.08, 329,845.47 and 128,751.42

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Solution

The fourth proportional to 219,859.08, 329,845.47 and 128,751.42 is: 193,160.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,859.08 : 329,845.47 = 128,751.42 : x
  2. Step 2: Convert to fraction form
    219,859.08/329,845.47 = 128,751.42/x
  3. Step 3: Cross multiply
    219,859.08x = 329,845.47 × 128,751.42
  4. Step 4: Simplify right side
    219,859.08x = 42,468,070,350.08
  5. Step 5: Solve for x
    x = 42,468,070,350.08/219,859.08
  6. Step 6: Final answer
    x = 193,160.42

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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.