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Finding the Fourth Proportional to 279,392.70, 385,562.67 and 158,533.66

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Solution

The fourth proportional to 279,392.70, 385,562.67 and 158,533.66 is: 218,776.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,392.70 : 385,562.67 = 158,533.66 : x
  2. Step 2: Convert to fraction form
    279,392.70/385,562.67 = 158,533.66/x
  3. Step 3: Cross multiply
    279,392.70x = 385,562.67 × 158,533.66
  4. Step 4: Simplify right side
    279,392.70x = 61,124,660,441.80
  5. Step 5: Solve for x
    x = 61,124,660,441.80/279,392.70
  6. Step 6: Final answer
    x = 218,776.87

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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.