Home / 385,456,978,613.03-531,943,387,295.44-211,848,271,711.13

Finding the Fourth Proportional to 385,456,978,613.03, 531,943,387,295.44 and 211,848,271,711.13

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Solution

The fourth proportional to 385,456,978,613.03, 531,943,387,295.44 and 211,848,271,711.13 is: 292,357,626,140.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,456,978,613.03 : 531,943,387,295.44 = 211,848,271,711.13 : x
  2. Step 2: Convert to fraction form
    385,456,978,613.03/531,943,387,295.44 = 211,848,271,711.13/x
  3. Step 3: Cross multiply
    385,456,978,613.03x = 531,943,387,295.44 × 211,848,271,711.13
  4. Step 4: Simplify right side
    385,456,978,613.03x = 112,691,287,246,703,232,548,864
  5. Step 5: Solve for x
    x = 112,691,287,246,703,232,548,864/385,456,978,613.03
  6. Step 6: Final answer
    x = 292,357,626,140.78

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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.