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Finding the Fourth Proportional to 206,807.70, 310,211.55 and 206,807.70

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Solution

The fourth proportional to 206,807.70, 310,211.55 and 206,807.70 is: 310,211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,807.70 : 310,211.55 = 206,807.70 : x
  2. Step 2: Convert to fraction form
    206,807.70/310,211.55 = 206,807.70/x
  3. Step 3: Cross multiply
    206,807.70x = 310,211.55 × 206,807.70
  4. Step 4: Simplify right side
    206,807.70x = 64,154,137,168.94
  5. Step 5: Solve for x
    x = 64,154,137,168.94/206,807.70
  6. Step 6: Final answer
    x = 310,211.55

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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.