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Finding the Fourth Proportional to 207,208.67, 309,633.46 and 155,580.75

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Solution

The fourth proportional to 207,208.67, 309,633.46 and 155,580.75 is: 232,485.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,208.67 : 309,633.46 = 155,580.75 : x
  2. Step 2: Convert to fraction form
    207,208.67/309,633.46 = 155,580.75/x
  3. Step 3: Cross multiply
    207,208.67x = 309,633.46 × 155,580.75
  4. Step 4: Simplify right side
    207,208.67x = 48,173,005,542.94
  5. Step 5: Solve for x
    x = 48,173,005,542.94/207,208.67
  6. Step 6: Final answer
    x = 232,485.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.