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Finding the Fourth Proportional to 245,448.86, 338,712.66 and 138,016.10

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Solution

The fourth proportional to 245,448.86, 338,712.66 and 138,016.10 is: 190,458.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,448.86 : 338,712.66 = 138,016.10 : x
  2. Step 2: Convert to fraction form
    245,448.86/338,712.66 = 138,016.10/x
  3. Step 3: Cross multiply
    245,448.86x = 338,712.66 × 138,016.10
  4. Step 4: Simplify right side
    245,448.86x = 46,747,800,353.83
  5. Step 5: Solve for x
    x = 46,747,800,353.83/245,448.86
  6. Step 6: Final answer
    x = 190,458.41

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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.