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Finding the Fourth Proportional to 245,464.92, 338,739.44 and 138,032.66

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Solution

The fourth proportional to 245,464.92, 338,739.44 and 138,032.66 is: 190,483.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,464.92 : 338,739.44 = 138,032.66 : x
  2. Step 2: Convert to fraction form
    245,464.92/338,739.44 = 138,032.66/x
  3. Step 3: Cross multiply
    245,464.92x = 338,739.44 × 138,032.66
  4. Step 4: Simplify right side
    245,464.92x = 46,757,105,950.11
  5. Step 5: Solve for x
    x = 46,757,105,950.11/245,464.92
  6. Step 6: Final answer
    x = 190,483.86

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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.