Home / 388,607.32-582,931.80-122,388.58

Finding the Fourth Proportional to 388,607.32, 582,931.80 and 122,388.58

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Solution

The fourth proportional to 388,607.32, 582,931.80 and 122,388.58 is: 183,589.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,607.32 : 582,931.80 = 122,388.58 : x
  2. Step 2: Convert to fraction form
    388,607.32/582,931.80 = 122,388.58/x
  3. Step 3: Cross multiply
    388,607.32x = 582,931.80 × 122,388.58
  4. Step 4: Simplify right side
    388,607.32x = 71,344,195,238.84
  5. Step 5: Solve for x
    x = 71,344,195,238.84/388,607.32
  6. Step 6: Final answer
    x = 183,589.43

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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.