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Finding the Fourth Proportional to 248,825.16, 343,377.90 and 135,647.88

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Solution

The fourth proportional to 248,825.16, 343,377.90 and 135,647.88 is: 187,193.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,825.16 : 343,377.90 = 135,647.88 : x
  2. Step 2: Convert to fraction form
    248,825.16/343,377.90 = 135,647.88/x
  3. Step 3: Cross multiply
    248,825.16x = 343,377.90 × 135,647.88
  4. Step 4: Simplify right side
    248,825.16x = 46,578,484,173.85
  5. Step 5: Solve for x
    x = 46,578,484,173.85/248,825.16
  6. Step 6: Final answer
    x = 187,193.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.