Home / 348,122.20-521,405.70-285,914.20

Finding the Fourth Proportional to 348,122.20, 521,405.70 and 285,914.20

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Solution

The fourth proportional to 348,122.20, 521,405.70 and 285,914.20 is: 428,232.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,122.20 : 521,405.70 = 285,914.20 : x
  2. Step 2: Convert to fraction form
    348,122.20/521,405.70 = 285,914.20/x
  3. Step 3: Cross multiply
    348,122.20x = 521,405.70 × 285,914.20
  4. Step 4: Simplify right side
    348,122.20x = 149,077,293,590.94
  5. Step 5: Solve for x
    x = 149,077,293,590.94/348,122.20
  6. Step 6: Final answer
    x = 428,232.65

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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.