Home / 254,238,639.45-381,361,502.24-72,485,817.45

Finding the Fourth Proportional to 254,238,639.45, 381,361,502.24 and 72,485,817.45

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Solution

The fourth proportional to 254,238,639.45, 381,361,502.24 and 72,485,817.45 is: 108,729,736.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,238,639.45 : 381,361,502.24 = 72,485,817.45 : x
  2. Step 2: Convert to fraction form
    254,238,639.45/381,361,502.24 = 72,485,817.45/x
  3. Step 3: Cross multiply
    254,238,639.45x = 381,361,502.24 × 72,485,817.45
  4. Step 4: Simplify right side
    254,238,639.45x = 27,643,300,233,463,980
  5. Step 5: Solve for x
    x = 27,643,300,233,463,980/254,238,639.45
  6. Step 6: Final answer
    x = 108,729,736.33

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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.