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Finding the Fourth Proportional to 245,654.91, 338,999.85 and 138,224.88

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Solution

The fourth proportional to 245,654.91, 338,999.85 and 138,224.88 is: 190,748.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,654.91 : 338,999.85 = 138,224.88 : x
  2. Step 2: Convert to fraction form
    245,654.91/338,999.85 = 138,224.88/x
  3. Step 3: Cross multiply
    245,654.91x = 338,999.85 × 138,224.88
  4. Step 4: Simplify right side
    245,654.91x = 46,858,213,586.27
  5. Step 5: Solve for x
    x = 46,858,213,586.27/245,654.91
  6. Step 6: Final answer
    x = 190,748.13

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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.