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Finding the Fourth Proportional to 393,191,576, 542,604,608.32 and 219,351,320

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Solution

The fourth proportional to 393,191,576, 542,604,608.32 and 219,351,320 is: 302,704,951.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,191,576 : 542,604,608.32 = 219,351,320 : x
  2. Step 2: Convert to fraction form
    393,191,576/542,604,608.32 = 219,351,320/x
  3. Step 3: Cross multiply
    393,191,576x = 542,604,608.32 × 219,351,320
  4. Step 4: Simplify right side
    393,191,576x = 119,021,037,073,074,992
  5. Step 5: Solve for x
    x = 119,021,037,073,074,992/393,191,576
  6. Step 6: Final answer
    x = 302,704,951.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.