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Finding the Fourth Proportional to 361,122.21, 498,342.47 and 199,973.79

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Solution

The fourth proportional to 361,122.21, 498,342.47 and 199,973.79 is: 275,960.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,122.21 : 498,342.47 = 199,973.79 : x
  2. Step 2: Convert to fraction form
    361,122.21/498,342.47 = 199,973.79/x
  3. Step 3: Cross multiply
    361,122.21x = 498,342.47 × 199,973.79
  4. Step 4: Simplify right side
    361,122.21x = 99,655,431,443.99
  5. Step 5: Solve for x
    x = 99,655,431,443.99/361,122.21
  6. Step 6: Final answer
    x = 275,960.41

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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.