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Finding the Fourth Proportional to 206,404.61, 309,637.69 and 73,273.71

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Solution

The fourth proportional to 206,404.61, 309,637.69 and 73,273.71 is: 109,921.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,404.61 : 309,637.69 = 73,273.71 : x
  2. Step 2: Convert to fraction form
    206,404.61/309,637.69 = 73,273.71/x
  3. Step 3: Cross multiply
    206,404.61x = 309,637.69 × 73,273.71
  4. Step 4: Simplify right side
    206,404.61x = 22,688,303,280.09
  5. Step 5: Solve for x
    x = 22,688,303,280.09/206,404.61
  6. Step 6: Final answer
    x = 109,921.50

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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.