Home / 257,384,116,754.88-386,132,026,564.48-78,305,449,512

Finding the Fourth Proportional to 257,384,116,754.88, 386,132,026,564.48 and 78,305,449,512

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Solution

The fourth proportional to 257,384,116,754.88, 386,132,026,564.48 and 78,305,449,512 is: 117,475,166,270.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,384,116,754.88 : 386,132,026,564.48 = 78,305,449,512 : x
  2. Step 2: Convert to fraction form
    257,384,116,754.88/386,132,026,564.48 = 78,305,449,512/x
  3. Step 3: Cross multiply
    257,384,116,754.88x = 386,132,026,564.48 × 78,305,449,512
  4. Step 4: Simplify right side
    257,384,116,754.88x = 30,236,241,911,111,128,973,312
  5. Step 5: Solve for x
    x = 30,236,241,911,111,128,973,312/257,384,116,754.88
  6. Step 6: Final answer
    x = 117,475,166,270.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.