Home / 260,657,510,040.79-390,775,272,168.24-81,491,272,835.20

Finding the Fourth Proportional to 260,657,510,040.79, 390,775,272,168.24 and 81,491,272,835.20

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Solution

The fourth proportional to 260,657,510,040.79, 390,775,272,168.24 and 81,491,272,835.20 is: 122,170,944,994.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,657,510,040.79 : 390,775,272,168.24 = 81,491,272,835.20 : x
  2. Step 2: Convert to fraction form
    260,657,510,040.79/390,775,272,168.24 = 81,491,272,835.20/x
  3. Step 3: Cross multiply
    260,657,510,040.79x = 390,775,272,168.24 × 81,491,272,835.20
  4. Step 4: Simplify right side
    260,657,510,040.79x = 31,844,774,321,510,414,286,848
  5. Step 5: Solve for x
    x = 31,844,774,321,510,414,286,848/260,657,510,040.79
  6. Step 6: Final answer
    x = 122,170,944,994.17

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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.