Home / 348,078.90-521,620.20-198,002.10

Finding the Fourth Proportional to 348,078.90, 521,620.20 and 198,002.10

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Solution

The fourth proportional to 348,078.90, 521,620.20 and 198,002.10 is: 296,719.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,078.90 : 521,620.20 = 198,002.10 : x
  2. Step 2: Convert to fraction form
    348,078.90/521,620.20 = 198,002.10/x
  3. Step 3: Cross multiply
    348,078.90x = 521,620.20 × 198,002.10
  4. Step 4: Simplify right side
    348,078.90x = 103,281,895,002.42
  5. Step 5: Solve for x
    x = 103,281,895,002.42/348,078.90
  6. Step 6: Final answer
    x = 296,719.78

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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.