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Finding the Fourth Proportional to 323,750.20, 485,625.30 and 99,110.20

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Solution

The fourth proportional to 323,750.20, 485,625.30 and 99,110.20 is: 148,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,750.20 : 485,625.30 = 99,110.20 : x
  2. Step 2: Convert to fraction form
    323,750.20/485,625.30 = 99,110.20/x
  3. Step 3: Cross multiply
    323,750.20x = 485,625.30 × 99,110.20
  4. Step 4: Simplify right side
    323,750.20x = 48,130,420,608.06
  5. Step 5: Solve for x
    x = 48,130,420,608.06/323,750.20
  6. Step 6: Final answer
    x = 148,665.30

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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.