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Finding the Fourth Proportional to 439,551.83, 659,291.29 and 140,020.31

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Solution

The fourth proportional to 439,551.83, 659,291.29 and 140,020.31 is: 210,018.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,551.83 : 659,291.29 = 140,020.31 : x
  2. Step 2: Convert to fraction form
    439,551.83/659,291.29 = 140,020.31/x
  3. Step 3: Cross multiply
    439,551.83x = 659,291.29 × 140,020.31
  4. Step 4: Simplify right side
    439,551.83x = 92,314,170,806.10
  5. Step 5: Solve for x
    x = 92,314,170,806.10/439,551.83
  6. Step 6: Final answer
    x = 210,018.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.