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Finding the Fourth Proportional to 422,521, 583,079 and 243,673

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Solution

The fourth proportional to 422,521, 583,079 and 243,673 is: 336,268.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,521 : 583,079 = 243,673 : x
  2. Step 2: Convert to fraction form
    422,521/583,079 = 243,673/x
  3. Step 3: Cross multiply
    422,521x = 583,079 × 243,673
  4. Step 4: Simplify right side
    422,521x = 142,080,609,167
  5. Step 5: Solve for x
    x = 142,080,609,167/422,521
  6. Step 6: Final answer
    x = 336,268.75

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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.