Home / 387,304.80-534,486.19-212,891.16

Finding the Fourth Proportional to 387,304.80, 534,486.19 and 212,891.16

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Solution

The fourth proportional to 387,304.80, 534,486.19 and 212,891.16 is: 293,792.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,304.80 : 534,486.19 = 212,891.16 : x
  2. Step 2: Convert to fraction form
    387,304.80/534,486.19 = 212,891.16/x
  3. Step 3: Cross multiply
    387,304.80x = 534,486.19 × 212,891.16
  4. Step 4: Simplify right side
    387,304.80x = 113,787,384,460.85
  5. Step 5: Solve for x
    x = 113,787,384,460.85/387,304.80
  6. Step 6: Final answer
    x = 293,792.86

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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.