Home / 385,456,978,620.78-531,943,387,306.02-211,848,271,718.82

Finding the Fourth Proportional to 385,456,978,620.78, 531,943,387,306.02 and 211,848,271,718.82

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Solution

The fourth proportional to 385,456,978,620.78, 531,943,387,306.02 and 211,848,271,718.82 is: 292,357,626,151.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,456,978,620.78 : 531,943,387,306.02 = 211,848,271,718.82 : x
  2. Step 2: Convert to fraction form
    385,456,978,620.78/531,943,387,306.02 = 211,848,271,718.82/x
  3. Step 3: Cross multiply
    385,456,978,620.78x = 531,943,387,306.02 × 211,848,271,718.82
  4. Step 4: Simplify right side
    385,456,978,620.78x = 112,691,287,253,035,239,079,936
  5. Step 5: Solve for x
    x = 112,691,287,253,035,239,079,936/385,456,978,620.78
  6. Step 6: Final answer
    x = 292,357,626,151.33

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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.