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Finding the Fourth Proportional to 350,689.20, 483,960.60 and 214,720.56

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Solution

The fourth proportional to 350,689.20, 483,960.60 and 214,720.56 is: 296,320.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,689.20 : 483,960.60 = 214,720.56 : x
  2. Step 2: Convert to fraction form
    350,689.20/483,960.60 = 214,720.56/x
  3. Step 3: Cross multiply
    350,689.20x = 483,960.60 × 214,720.56
  4. Step 4: Simplify right side
    350,689.20x = 103,916,291,049.94
  5. Step 5: Solve for x
    x = 103,916,291,049.94/350,689.20
  6. Step 6: Final answer
    x = 296,320.19

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1.5x scale

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.