Home / 385,724.88-578,961.12-186,185.52

Finding the Fourth Proportional to 385,724.88, 578,961.12 and 186,185.52

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Solution

The fourth proportional to 385,724.88, 578,961.12 and 186,185.52 is: 279,458.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,724.88 : 578,961.12 = 186,185.52 : x
  2. Step 2: Convert to fraction form
    385,724.88/578,961.12 = 186,185.52/x
  3. Step 3: Cross multiply
    385,724.88x = 578,961.12 × 186,185.52
  4. Step 4: Simplify right side
    385,724.88x = 107,794,177,186.98
  5. Step 5: Solve for x
    x = 107,794,177,186.98/385,724.88
  6. Step 6: Final answer
    x = 279,458.71

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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.