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Finding the Fourth Proportional to 203,257.01, 305,072.67 and 103,488.50

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Solution

The fourth proportional to 203,257.01, 305,072.67 and 103,488.50 is: 155,328.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,257.01 : 305,072.67 = 103,488.50 : x
  2. Step 2: Convert to fraction form
    203,257.01/305,072.67 = 103,488.50/x
  3. Step 3: Cross multiply
    203,257.01x = 305,072.67 × 103,488.50
  4. Step 4: Simplify right side
    203,257.01x = 31,571,513,009.30
  5. Step 5: Solve for x
    x = 31,571,513,009.30/203,257.01
  6. Step 6: Final answer
    x = 155,328.04

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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.