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Finding the Fourth Proportional to 439,634.67, 606,503.22 and 258,264.78

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Solution

The fourth proportional to 439,634.67, 606,503.22 and 258,264.78 is: 356,292.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,634.67 : 606,503.22 = 258,264.78 : x
  2. Step 2: Convert to fraction form
    439,634.67/606,503.22 = 258,264.78/x
  3. Step 3: Cross multiply
    439,634.67x = 606,503.22 × 258,264.78
  4. Step 4: Simplify right side
    439,634.67x = 156,638,420,682.59
  5. Step 5: Solve for x
    x = 156,638,420,682.59/439,634.67
  6. Step 6: Final answer
    x = 356,292.24

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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.