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Finding the Fourth Proportional to 203,289.50, 280,539.51 and 123,801.50

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Solution

The fourth proportional to 203,289.50, 280,539.51 and 123,801.50 is: 170,846.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,289.50 : 280,539.51 = 123,801.50 : x
  2. Step 2: Convert to fraction form
    203,289.50/280,539.51 = 123,801.50/x
  3. Step 3: Cross multiply
    203,289.50x = 280,539.51 × 123,801.50
  4. Step 4: Simplify right side
    203,289.50x = 34,731,212,147.27
  5. Step 5: Solve for x
    x = 34,731,212,147.27/203,289.50
  6. Step 6: Final answer
    x = 170,846.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.