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Finding the Fourth Proportional to 323,907.70, 485,861.55 and 99,266.35

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Solution

The fourth proportional to 323,907.70, 485,861.55 and 99,266.35 is: 148,899.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,907.70 : 485,861.55 = 99,266.35 : x
  2. Step 2: Convert to fraction form
    323,907.70/485,861.55 = 99,266.35/x
  3. Step 3: Cross multiply
    323,907.70x = 485,861.55 × 99,266.35
  4. Step 4: Simplify right side
    323,907.70x = 48,229,702,673.84
  5. Step 5: Solve for x
    x = 48,229,702,673.84/323,907.70
  6. Step 6: Final answer
    x = 148,899.53

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Similar ratio
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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.