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Finding the Fourth Proportional to 245,494.89, 338,668.56 and 159,447.78

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Solution

The fourth proportional to 245,494.89, 338,668.56 and 159,447.78 is: 219,963.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,494.89 : 338,668.56 = 159,447.78 : x
  2. Step 2: Convert to fraction form
    245,494.89/338,668.56 = 159,447.78/x
  3. Step 3: Cross multiply
    245,494.89x = 338,668.56 × 159,447.78
  4. Step 4: Simplify right side
    245,494.89x = 53,999,950,047.80
  5. Step 5: Solve for x
    x = 53,999,950,047.80/245,494.89
  6. Step 6: Final answer
    x = 219,963.64

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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.