Home / 388,447,358.88-536,051,098.80-212,231,569.44

Finding the Fourth Proportional to 388,447,358.88, 536,051,098.80 and 212,231,569.44

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Solution

The fourth proportional to 388,447,358.88, 536,051,098.80 and 212,231,569.44 is: 292,876,147.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,447,358.88 : 536,051,098.80 = 212,231,569.44 : x
  2. Step 2: Convert to fraction form
    388,447,358.88/536,051,098.80 = 212,231,569.44/x
  3. Step 3: Cross multiply
    388,447,358.88x = 536,051,098.80 × 212,231,569.44
  4. Step 4: Simplify right side
    388,447,358.88x = 113,766,965,998,360,496
  5. Step 5: Solve for x
    x = 113,766,965,998,360,496/388,447,358.88
  6. Step 6: Final answer
    x = 292,876,147.56

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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.