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Finding the Fourth Proportional to 206,580,012.30, 309,870,018.45 and 206,580,012.30

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Solution

The fourth proportional to 206,580,012.30, 309,870,018.45 and 206,580,012.30 is: 309,870,018.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,580,012.30 : 309,870,018.45 = 206,580,012.30 : x
  2. Step 2: Convert to fraction form
    206,580,012.30/309,870,018.45 = 206,580,012.30/x
  3. Step 3: Cross multiply
    206,580,012.30x = 309,870,018.45 × 206,580,012.30
  4. Step 4: Simplify right side
    206,580,012.30x = 64,012,952,222,802,232
  5. Step 5: Solve for x
    x = 64,012,952,222,802,232/206,580,012.30
  6. Step 6: Final answer
    x = 309,870,018.45

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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.