Home / 388,666,217.28-536,359,404.96-212,454,909.84

Finding the Fourth Proportional to 388,666,217.28, 536,359,404.96 and 212,454,909.84

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Solution

The fourth proportional to 388,666,217.28, 536,359,404.96 and 212,454,909.84 is: 293,187,789.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,666,217.28 : 536,359,404.96 = 212,454,909.84 : x
  2. Step 2: Convert to fraction form
    388,666,217.28/536,359,404.96 = 212,454,909.84/x
  3. Step 3: Cross multiply
    388,666,217.28x = 536,359,404.96 × 212,454,909.84
  4. Step 4: Simplify right side
    388,666,217.28x = 113,952,189,022,612,848
  5. Step 5: Solve for x
    x = 113,952,189,022,612,848/388,666,217.28
  6. Step 6: Final answer
    x = 293,187,789.31

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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.