Home / 521,932.97-720,233.39-307,031.51

Finding the Fourth Proportional to 521,932.97, 720,233.39 and 307,031.51

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Solution

The fourth proportional to 521,932.97, 720,233.39 and 307,031.51 is: 423,683.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,932.97 : 720,233.39 = 307,031.51 : x
  2. Step 2: Convert to fraction form
    521,932.97/720,233.39 = 307,031.51/x
  3. Step 3: Cross multiply
    521,932.97x = 720,233.39 × 307,031.51
  4. Step 4: Simplify right side
    521,932.97x = 221,134,346,125.23
  5. Step 5: Solve for x
    x = 221,134,346,125.23/521,932.97
  6. Step 6: Final answer
    x = 423,683.42

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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.