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Finding the Fourth Proportional to 245,488.24, 338,770.56 and 138,058.24

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Solution

The fourth proportional to 245,488.24, 338,770.56 and 138,058.24 is: 190,518.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,488.24 : 338,770.56 = 138,058.24 : x
  2. Step 2: Convert to fraction form
    245,488.24/338,770.56 = 138,058.24/x
  3. Step 3: Cross multiply
    245,488.24x = 338,770.56 × 138,058.24
  4. Step 4: Simplify right side
    245,488.24x = 46,770,067,277.41
  5. Step 5: Solve for x
    x = 46,770,067,277.41/245,488.24
  6. Step 6: Final answer
    x = 190,518.57

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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.