Home / 387,338.10-534,525.71-215,255.49

Finding the Fourth Proportional to 387,338.10, 534,525.71 and 215,255.49

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Solution

The fourth proportional to 387,338.10, 534,525.71 and 215,255.49 is: 297,052.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,338.10 : 534,525.71 = 215,255.49 : x
  2. Step 2: Convert to fraction form
    387,338.10/534,525.71 = 215,255.49/x
  3. Step 3: Cross multiply
    387,338.10x = 534,525.71 × 215,255.49
  4. Step 4: Simplify right side
    387,338.10x = 115,059,593,623.65
  5. Step 5: Solve for x
    x = 115,059,593,623.65/387,338.10
  6. Step 6: Final answer
    x = 297,052.09

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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.