Home / 238,862,153,481.49-329,629,759,198.05-128,996,488,965.51

Finding the Fourth Proportional to 238,862,153,481.49, 329,629,759,198.05 and 128,996,488,965.51

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Solution

The fourth proportional to 238,862,153,481.49, 329,629,759,198.05 and 128,996,488,965.51 is: 178,015,147,964.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,862,153,481.49 : 329,629,759,198.05 = 128,996,488,965.51 : x
  2. Step 2: Convert to fraction form
    238,862,153,481.49/329,629,759,198.05 = 128,996,488,965.51/x
  3. Step 3: Cross multiply
    238,862,153,481.49x = 329,629,759,198.05 × 128,996,488,965.51
  4. Step 4: Simplify right side
    238,862,153,481.49x = 42,521,081,595,094,972,235,776
  5. Step 5: Solve for x
    x = 42,521,081,595,094,972,235,776/238,862,153,481.49
  6. Step 6: Final answer
    x = 178,015,147,964.37

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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.