Home / 323,919.03-485,971.94-99,312.62

Finding the Fourth Proportional to 323,919.03, 485,971.94 and 99,312.62

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Solution

The fourth proportional to 323,919.03, 485,971.94 and 99,312.62 is: 148,997.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,919.03 : 485,971.94 = 99,312.62 : x
  2. Step 2: Convert to fraction form
    323,919.03/485,971.94 = 99,312.62/x
  3. Step 3: Cross multiply
    323,919.03x = 485,971.94 × 99,312.62
  4. Step 4: Simplify right side
    323,919.03x = 48,263,143,867.67
  5. Step 5: Solve for x
    x = 48,263,143,867.67/323,919.03
  6. Step 6: Final answer
    x = 148,997.55

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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.