Home / 351,505.43-485,125.77-215,515.34

Finding the Fourth Proportional to 351,505.43, 485,125.77 and 215,515.34

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Solution

The fourth proportional to 351,505.43, 485,125.77 and 215,515.34 is: 297,440.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,505.43 : 485,125.77 = 215,515.34 : x
  2. Step 2: Convert to fraction form
    351,505.43/485,125.77 = 215,515.34/x
  3. Step 3: Cross multiply
    351,505.43x = 485,125.77 × 215,515.34
  4. Step 4: Simplify right side
    351,505.43x = 104,552,045,264.31
  5. Step 5: Solve for x
    x = 104,552,045,264.31/351,505.43
  6. Step 6: Final answer
    x = 297,440.77

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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.