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Finding the Fourth Proportional to 245,588.32, 338,912.40 and 144,992.80

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Solution

The fourth proportional to 245,588.32, 338,912.40 and 144,992.80 is: 200,090.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,588.32 : 338,912.40 = 144,992.80 : x
  2. Step 2: Convert to fraction form
    245,588.32/338,912.40 = 144,992.80/x
  3. Step 3: Cross multiply
    245,588.32x = 338,912.40 × 144,992.80
  4. Step 4: Simplify right side
    245,588.32x = 49,139,857,830.72
  5. Step 5: Solve for x
    x = 49,139,857,830.72/245,588.32
  6. Step 6: Final answer
    x = 200,090.37

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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.