Home / 348,020.20-521,252.70-285,812.20

Finding the Fourth Proportional to 348,020.20, 521,252.70 and 285,812.20

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Solution

The fourth proportional to 348,020.20, 521,252.70 and 285,812.20 is: 428,079.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,020.20 : 521,252.70 = 285,812.20 : x
  2. Step 2: Convert to fraction form
    348,020.20/521,252.70 = 285,812.20/x
  3. Step 3: Cross multiply
    348,020.20x = 521,252.70 × 285,812.20
  4. Step 4: Simplify right side
    348,020.20x = 148,980,380,942.94
  5. Step 5: Solve for x
    x = 148,980,380,942.94/348,020.20
  6. Step 6: Final answer
    x = 428,079.69

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1.5x scale

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.