Home / 378,058.32-521,742.24-216,911.88

Finding the Fourth Proportional to 378,058.32, 521,742.24 and 216,911.88

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Solution

The fourth proportional to 378,058.32, 521,742.24 and 216,911.88 is: 299,350.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,058.32 : 521,742.24 = 216,911.88 : x
  2. Step 2: Convert to fraction form
    378,058.32/521,742.24 = 216,911.88/x
  3. Step 3: Cross multiply
    378,058.32x = 521,742.24 × 216,911.88
  4. Step 4: Simplify right side
    378,058.32x = 113,172,090,153.81
  5. Step 5: Solve for x
    x = 113,172,090,153.81/378,058.32
  6. Step 6: Final answer
    x = 299,350.88

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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.