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Finding the Fourth Proportional to 279,257.48, 385,608 and 258,996.32

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Solution

The fourth proportional to 279,257.48, 385,608 and 258,996.32 is: 357,630.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,257.48 : 385,608 = 258,996.32 : x
  2. Step 2: Convert to fraction form
    279,257.48/385,608 = 258,996.32/x
  3. Step 3: Cross multiply
    279,257.48x = 385,608 × 258,996.32
  4. Step 4: Simplify right side
    279,257.48x = 99,871,052,962.56
  5. Step 5: Solve for x
    x = 99,871,052,962.56/279,257.48
  6. Step 6: Final answer
    x = 357,630.72

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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.