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Finding the Fourth Proportional to 250,511.33, 345,699.07 and 135,784.95

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Solution

The fourth proportional to 250,511.33, 345,699.07 and 135,784.95 is: 187,379.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,511.33 : 345,699.07 = 135,784.95 : x
  2. Step 2: Convert to fraction form
    250,511.33/345,699.07 = 135,784.95/x
  3. Step 3: Cross multiply
    250,511.33x = 345,699.07 × 135,784.95
  4. Step 4: Simplify right side
    250,511.33x = 46,940,730,595.53
  5. Step 5: Solve for x
    x = 46,940,730,595.53/250,511.33
  6. Step 6: Final answer
    x = 187,379.67

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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.