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Finding the Fourth Proportional to 279,706.19, 385,995.03 and 158,847.45

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Solution

The fourth proportional to 279,706.19, 385,995.03 and 158,847.45 is: 219,209.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,706.19 : 385,995.03 = 158,847.45 : x
  2. Step 2: Convert to fraction form
    279,706.19/385,995.03 = 158,847.45/x
  3. Step 3: Cross multiply
    279,706.19x = 385,995.03 × 158,847.45
  4. Step 4: Simplify right side
    279,706.19x = 61,314,326,367.42
  5. Step 5: Solve for x
    x = 61,314,326,367.42/279,706.19
  6. Step 6: Final answer
    x = 219,209.76

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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.