Home / 387,340.66-534,537.03-215,274.34

Finding the Fourth Proportional to 387,340.66, 534,537.03 and 215,274.34

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Solution

The fourth proportional to 387,340.66, 534,537.03 and 215,274.34 is: 297,082.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,340.66 : 534,537.03 = 215,274.34 : x
  2. Step 2: Convert to fraction form
    387,340.66/534,537.03 = 215,274.34/x
  3. Step 3: Cross multiply
    387,340.66x = 534,537.03 × 215,274.34
  4. Step 4: Simplify right side
    387,340.66x = 115,072,106,338.81
  5. Step 5: Solve for x
    x = 115,072,106,338.81/387,340.66
  6. Step 6: Final answer
    x = 297,082.43

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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.