Home / 385,456,978,608.83-531,943,387,289.55-211,848,271,706.88

Finding the Fourth Proportional to 385,456,978,608.83, 531,943,387,289.55 and 211,848,271,706.88

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Solution

The fourth proportional to 385,456,978,608.83, 531,943,387,289.55 and 211,848,271,706.88 is: 292,357,626,134.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,456,978,608.83 : 531,943,387,289.55 = 211,848,271,706.88 : x
  2. Step 2: Convert to fraction form
    385,456,978,608.83/531,943,387,289.55 = 211,848,271,706.88/x
  3. Step 3: Cross multiply
    385,456,978,608.83x = 531,943,387,289.55 × 211,848,271,706.88
  4. Step 4: Simplify right side
    385,456,978,608.83x = 112,691,287,243,194,680,475,648
  5. Step 5: Solve for x
    x = 112,691,287,243,194,680,475,648/385,456,978,608.83
  6. Step 6: Final answer
    x = 292,357,626,134.86

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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.