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Finding the Fourth Proportional to 279,661.23, 385,930.52 and 152,336.82

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Solution

The fourth proportional to 279,661.23, 385,930.52 and 152,336.82 is: 210,223.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,661.23 : 385,930.52 = 152,336.82 : x
  2. Step 2: Convert to fraction form
    279,661.23/385,930.52 = 152,336.82/x
  3. Step 3: Cross multiply
    279,661.23x = 385,930.52 × 152,336.82
  4. Step 4: Simplify right side
    279,661.23x = 58,791,427,396.06
  5. Step 5: Solve for x
    x = 58,791,427,396.06/279,661.23
  6. Step 6: Final answer
    x = 210,223.73

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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.