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Finding the Fourth Proportional to 245,241.53, 338,430.30 and 137,829.72

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Solution

The fourth proportional to 245,241.53, 338,430.30 and 137,829.72 is: 190,203.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,241.53 : 338,430.30 = 137,829.72 : x
  2. Step 2: Convert to fraction form
    245,241.53/338,430.30 = 137,829.72/x
  3. Step 3: Cross multiply
    245,241.53x = 338,430.30 × 137,829.72
  4. Step 4: Simplify right side
    245,241.53x = 46,645,753,488.52
  5. Step 5: Solve for x
    x = 46,645,753,488.52/245,241.53
  6. Step 6: Final answer
    x = 190,203.33

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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.