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Finding the Fourth Proportional to 206,732.40, 310,098.60 and 190,143.60

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Solution

The fourth proportional to 206,732.40, 310,098.60 and 190,143.60 is: 285,215.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,732.40 : 310,098.60 = 190,143.60 : x
  2. Step 2: Convert to fraction form
    206,732.40/310,098.60 = 190,143.60/x
  3. Step 3: Cross multiply
    206,732.40x = 310,098.60 × 190,143.60
  4. Step 4: Simplify right side
    206,732.40x = 58,963,264,158.96
  5. Step 5: Solve for x
    x = 58,963,264,158.96/206,732.40
  6. Step 6: Final answer
    x = 285,215.40

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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.