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Finding the Fourth Proportional to 279,851.67, 385,890.39 and 189,050.06

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Solution

The fourth proportional to 279,851.67, 385,890.39 and 189,050.06 is: 260,683.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,851.67 : 385,890.39 = 189,050.06 : x
  2. Step 2: Convert to fraction form
    279,851.67/385,890.39 = 189,050.06/x
  3. Step 3: Cross multiply
    279,851.67x = 385,890.39 × 189,050.06
  4. Step 4: Simplify right side
    279,851.67x = 72,952,599,453.47
  5. Step 5: Solve for x
    x = 72,952,599,453.47/279,851.67
  6. Step 6: Final answer
    x = 260,683.09

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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.