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Finding the Fourth Proportional to 305,930.08, 422,189.04 and 171,798.88

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Solution

The fourth proportional to 305,930.08, 422,189.04 and 171,798.88 is: 237,085.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,930.08 : 422,189.04 = 171,798.88 : x
  2. Step 2: Convert to fraction form
    305,930.08/422,189.04 = 171,798.88/x
  3. Step 3: Cross multiply
    305,930.08x = 422,189.04 × 171,798.88
  4. Step 4: Simplify right side
    305,930.08x = 72,531,604,220.28
  5. Step 5: Solve for x
    x = 72,531,604,220.28/305,930.08
  6. Step 6: Final answer
    x = 237,085.56

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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.