Home / 351,537.12-485,142.48-215,586.72

Finding the Fourth Proportional to 351,537.12, 485,142.48 and 215,586.72

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Solution

The fourth proportional to 351,537.12, 485,142.48 and 215,586.72 is: 297,522.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,537.12 : 485,142.48 = 215,586.72 : x
  2. Step 2: Convert to fraction form
    351,537.12/485,142.48 = 215,586.72/x
  3. Step 3: Cross multiply
    351,537.12x = 485,142.48 × 215,586.72
  4. Step 4: Simplify right side
    351,537.12x = 104,590,275,995.87
  5. Step 5: Solve for x
    x = 104,590,275,995.87/351,537.12
  6. Step 6: Final answer
    x = 297,522.71

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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.