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Finding the Fourth Proportional to 245,970, 339,434.92 and 138,550.48

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Solution

The fourth proportional to 245,970, 339,434.92 and 138,550.48 is: 191,197.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,970 : 339,434.92 = 138,550.48 : x
  2. Step 2: Convert to fraction form
    245,970/339,434.92 = 138,550.48/x
  3. Step 3: Cross multiply
    245,970x = 339,434.92 × 138,550.48
  4. Step 4: Simplify right side
    245,970x = 47,028,871,094.76
  5. Step 5: Solve for x
    x = 47,028,871,094.76/245,970
  6. Step 6: Final answer
    x = 191,197.59

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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.