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Finding the Fourth Proportional to 279,273.88, 385,386.44 and 151,949.98

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Solution

The fourth proportional to 279,273.88, 385,386.44 and 151,949.98 is: 209,684.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,273.88 : 385,386.44 = 151,949.98 : x
  2. Step 2: Convert to fraction form
    279,273.88/385,386.44 = 151,949.98/x
  3. Step 3: Cross multiply
    279,273.88x = 385,386.44 × 151,949.98
  4. Step 4: Simplify right side
    279,273.88x = 58,559,461,850.27
  5. Step 5: Solve for x
    x = 58,559,461,850.27/279,273.88
  6. Step 6: Final answer
    x = 209,684.71

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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.