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Finding the Fourth Proportional to 245,571.01, 338,884.90 and 138,141.79

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Solution

The fourth proportional to 245,571.01, 338,884.90 and 138,141.79 is: 190,633.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,571.01 : 338,884.90 = 138,141.79 : x
  2. Step 2: Convert to fraction form
    245,571.01/338,884.90 = 138,141.79/x
  3. Step 3: Cross multiply
    245,571.01x = 338,884.90 × 138,141.79
  4. Step 4: Simplify right side
    245,571.01x = 46,814,166,689.97
  5. Step 5: Solve for x
    x = 46,814,166,689.97/245,571.01
  6. Step 6: Final answer
    x = 190,633.93

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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.