Home / 385,456,978,623.73-531,943,387,310.15-211,848,271,721.76

Finding the Fourth Proportional to 385,456,978,623.73, 531,943,387,310.15 and 211,848,271,721.76

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Solution

The fourth proportional to 385,456,978,623.73, 531,943,387,310.15 and 211,848,271,721.76 is: 292,357,626,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,456,978,623.73 : 531,943,387,310.15 = 211,848,271,721.76 : x
  2. Step 2: Convert to fraction form
    385,456,978,623.73/531,943,387,310.15 = 211,848,271,721.76/x
  3. Step 3: Cross multiply
    385,456,978,623.73x = 531,943,387,310.15 × 211,848,271,721.76
  4. Step 4: Simplify right side
    385,456,978,623.73x = 112,691,287,255,474,092,638,208
  5. Step 5: Solve for x
    x = 112,691,287,255,474,092,638,208/385,456,978,623.73
  6. Step 6: Final answer
    x = 292,357,626,155.42

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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.