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Finding the Fourth Proportional to 439,635.05, 606,503.74 and 258,265.16

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Solution

The fourth proportional to 439,635.05, 606,503.74 and 258,265.16 is: 356,292.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,635.05 : 606,503.74 = 258,265.16 : x
  2. Step 2: Convert to fraction form
    439,635.05/606,503.74 = 258,265.16/x
  3. Step 3: Cross multiply
    439,635.05x = 606,503.74 × 258,265.16
  4. Step 4: Simplify right side
    439,635.05x = 156,638,781,773.52
  5. Step 5: Solve for x
    x = 156,638,781,773.52/439,635.05
  6. Step 6: Final answer
    x = 356,292.76

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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.