Home / 385,456,978,610.15-531,943,387,291.45-211,848,271,708.26

Finding the Fourth Proportional to 385,456,978,610.15, 531,943,387,291.45 and 211,848,271,708.26

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Solution

The fourth proportional to 385,456,978,610.15, 531,943,387,291.45 and 211,848,271,708.26 is: 292,357,626,136.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,456,978,610.15 : 531,943,387,291.45 = 211,848,271,708.26 : x
  2. Step 2: Convert to fraction form
    385,456,978,610.15/531,943,387,291.45 = 211,848,271,708.26/x
  3. Step 3: Cross multiply
    385,456,978,610.15x = 531,943,387,291.45 × 211,848,271,708.26
  4. Step 4: Simplify right side
    385,456,978,610.15x = 112,691,287,244,331,286,528,000
  5. Step 5: Solve for x
    x = 112,691,287,244,331,286,528,000/385,456,978,610.15
  6. Step 6: Final answer
    x = 292,357,626,136.81

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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.