Home / 348,023.20-521,257.20-285,815.20

Finding the Fourth Proportional to 348,023.20, 521,257.20 and 285,815.20

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Solution

The fourth proportional to 348,023.20, 521,257.20 and 285,815.20 is: 428,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,023.20 : 521,257.20 = 285,815.20 : x
  2. Step 2: Convert to fraction form
    348,023.20/521,257.20 = 285,815.20/x
  3. Step 3: Cross multiply
    348,023.20x = 521,257.20 × 285,815.20
  4. Step 4: Simplify right side
    348,023.20x = 148,983,230,869.44
  5. Step 5: Solve for x
    x = 148,983,230,869.44/348,023.20
  6. Step 6: Final answer
    x = 428,084.19

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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.