Home / 521,314.20-782,408.70-255,302.10

Finding the Fourth Proportional to 521,314.20, 782,408.70 and 255,302.10

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Solution

The fourth proportional to 521,314.20, 782,408.70 and 255,302.10 is: 383,167.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,314.20 : 782,408.70 = 255,302.10 : x
  2. Step 2: Convert to fraction form
    521,314.20/782,408.70 = 255,302.10/x
  3. Step 3: Cross multiply
    521,314.20x = 782,408.70 × 255,302.10
  4. Step 4: Simplify right side
    521,314.20x = 199,750,584,168.27
  5. Step 5: Solve for x
    x = 199,750,584,168.27/521,314.20
  6. Step 6: Final answer
    x = 383,167.36

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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.