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Finding the Fourth Proportional to 439,221, 606,124.98 and 238,017

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Solution

The fourth proportional to 439,221, 606,124.98 and 238,017 is: 328,463.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,221 : 606,124.98 = 238,017 : x
  2. Step 2: Convert to fraction form
    439,221/606,124.98 = 238,017/x
  3. Step 3: Cross multiply
    439,221x = 606,124.98 × 238,017
  4. Step 4: Simplify right side
    439,221x = 144,268,049,364.66
  5. Step 5: Solve for x
    x = 144,268,049,364.66/439,221
  6. Step 6: Final answer
    x = 328,463.46

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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.