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Finding the Fourth Proportional to 279,362.70, 385,522.23 and 152,039.61

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Solution

The fourth proportional to 279,362.70, 385,522.23 and 152,039.61 is: 209,815.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,362.70 : 385,522.23 = 152,039.61 : x
  2. Step 2: Convert to fraction form
    279,362.70/385,522.23 = 152,039.61/x
  3. Step 3: Cross multiply
    279,362.70x = 385,522.23 × 152,039.61
  4. Step 4: Simplify right side
    279,362.70x = 58,614,649,495.53
  5. Step 5: Solve for x
    x = 58,614,649,495.53/279,362.70
  6. Step 6: Final answer
    x = 209,815.59

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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.