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Finding the Fourth Proportional to 439,761.64, 606,885.96 and 258,471

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Solution

The fourth proportional to 439,761.64, 606,885.96 and 258,471 is: 356,698.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,761.64 : 606,885.96 = 258,471 : x
  2. Step 2: Convert to fraction form
    439,761.64/606,885.96 = 258,471/x
  3. Step 3: Cross multiply
    439,761.64x = 606,885.96 × 258,471
  4. Step 4: Simplify right side
    439,761.64x = 156,862,420,967.16
  5. Step 5: Solve for x
    x = 156,862,420,967.16/439,761.64
  6. Step 6: Final answer
    x = 356,698.74

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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.