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Finding the Fourth Proportional to 323,709.28, 485,546.06 and 99,069.55

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Solution

The fourth proportional to 323,709.28, 485,546.06 and 99,069.55 is: 148,598.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,709.28 : 485,546.06 = 99,069.55 : x
  2. Step 2: Convert to fraction form
    323,709.28/485,546.06 = 99,069.55/x
  3. Step 3: Cross multiply
    323,709.28x = 485,546.06 × 99,069.55
  4. Step 4: Simplify right side
    323,709.28x = 48,102,828,702.28
  5. Step 5: Solve for x
    x = 48,102,828,702.28/323,709.28
  6. Step 6: Final answer
    x = 148,598.86

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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.