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Finding the Fourth Proportional to 323,999.80, 485,937.06 and 99,305.80

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Solution

The fourth proportional to 323,999.80, 485,937.06 and 99,305.80 is: 148,939.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,999.80 : 485,937.06 = 99,305.80 : x
  2. Step 2: Convert to fraction form
    323,999.80/485,937.06 = 99,305.80/x
  3. Step 3: Cross multiply
    323,999.80x = 485,937.06 × 99,305.80
  4. Step 4: Simplify right side
    323,999.80x = 48,256,368,492.95
  5. Step 5: Solve for x
    x = 48,256,368,492.95/323,999.80
  6. Step 6: Final answer
    x = 148,939.50

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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.