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Finding the Fourth Proportional to 348,390.48, 480,751.29 and 195,408.21

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Solution

The fourth proportional to 348,390.48, 480,751.29 and 195,408.21 is: 269,647.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,390.48 : 480,751.29 = 195,408.21 : x
  2. Step 2: Convert to fraction form
    348,390.48/480,751.29 = 195,408.21/x
  3. Step 3: Cross multiply
    348,390.48x = 480,751.29 × 195,408.21
  4. Step 4: Simplify right side
    348,390.48x = 93,942,749,034.09
  5. Step 5: Solve for x
    x = 93,942,749,034.09/348,390.48
  6. Step 6: Final answer
    x = 269,647.86

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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.