Home / 458,438.58-687,301.47-218,429.46

Finding the Fourth Proportional to 458,438.58, 687,301.47 and 218,429.46

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Solution

The fourth proportional to 458,438.58, 687,301.47 and 218,429.46 is: 327,474.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,438.58 : 687,301.47 = 218,429.46 : x
  2. Step 2: Convert to fraction form
    458,438.58/687,301.47 = 218,429.46/x
  3. Step 3: Cross multiply
    458,438.58x = 687,301.47 × 218,429.46
  4. Step 4: Simplify right side
    458,438.58x = 150,126,888,949.31
  5. Step 5: Solve for x
    x = 150,126,888,949.31/458,438.58
  6. Step 6: Final answer
    x = 327,474.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.