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Finding the Fourth Proportional to 279,558.37, 385,780.37 and 152,231.17

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Solution

The fourth proportional to 279,558.37, 385,780.37 and 152,231.17 is: 210,073.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,558.37 : 385,780.37 = 152,231.17 : x
  2. Step 2: Convert to fraction form
    279,558.37/385,780.37 = 152,231.17/x
  3. Step 3: Cross multiply
    279,558.37x = 385,780.37 × 152,231.17
  4. Step 4: Simplify right side
    279,558.37x = 58,727,796,326.98
  5. Step 5: Solve for x
    x = 58,727,796,326.98/279,558.37
  6. Step 6: Final answer
    x = 210,073.47

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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.