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Finding the Fourth Proportional to 245,077.86, 338,214.96 and 137,650.08

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Solution

The fourth proportional to 245,077.86, 338,214.96 and 137,650.08 is: 189,961.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,077.86 : 338,214.96 = 137,650.08 : x
  2. Step 2: Convert to fraction form
    245,077.86/338,214.96 = 137,650.08/x
  3. Step 3: Cross multiply
    245,077.86x = 338,214.96 × 137,650.08
  4. Step 4: Simplify right side
    245,077.86x = 46,555,316,301.20
  5. Step 5: Solve for x
    x = 46,555,316,301.20/245,077.86
  6. Step 6: Final answer
    x = 189,961.33

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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.