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Finding the Fourth Proportional to 279,181,330.20, 418,771,995.30 and 279,181,330.20

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Solution

The fourth proportional to 279,181,330.20, 418,771,995.30 and 279,181,330.20 is: 418,771,995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,181,330.20 : 418,771,995.30 = 279,181,330.20 : x
  2. Step 2: Convert to fraction form
    279,181,330.20/418,771,995.30 = 279,181,330.20/x
  3. Step 3: Cross multiply
    279,181,330.20x = 418,771,995.30 × 279,181,330.20
  4. Step 4: Simplify right side
    279,181,330.20x = 116,913,322,698,362,144
  5. Step 5: Solve for x
    x = 116,913,322,698,362,144/279,181,330.20
  6. Step 6: Final answer
    x = 418,771,995.30

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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.