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Finding the Fourth Proportional to 439,422.88, 606,398.16 and 238,214.56

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Solution

The fourth proportional to 439,422.88, 606,398.16 and 238,214.56 is: 328,733.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,422.88 : 606,398.16 = 238,214.56 : x
  2. Step 2: Convert to fraction form
    439,422.88/606,398.16 = 238,214.56/x
  3. Step 3: Cross multiply
    439,422.88x = 606,398.16 × 238,214.56
  4. Step 4: Simplify right side
    439,422.88x = 144,452,870,869.21
  5. Step 5: Solve for x
    x = 144,452,870,869.21/439,422.88
  6. Step 6: Final answer
    x = 328,733.16

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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.