Home / 387,144.57-534,263.16-212,718.41

Finding the Fourth Proportional to 387,144.57, 534,263.16 and 212,718.41

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Solution

The fourth proportional to 387,144.57, 534,263.16 and 212,718.41 is: 293,553.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,144.57 : 534,263.16 = 212,718.41 : x
  2. Step 2: Convert to fraction form
    387,144.57/534,263.16 = 212,718.41/x
  3. Step 3: Cross multiply
    387,144.57x = 534,263.16 × 212,718.41
  4. Step 4: Simplify right side
    387,144.57x = 113,647,608,850.10
  5. Step 5: Solve for x
    x = 113,647,608,850.10/387,144.57
  6. Step 6: Final answer
    x = 293,553.41

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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.