Home / 438,656.28-658,227.71-214,018.57

Finding the Fourth Proportional to 438,656.28, 658,227.71 and 214,018.57

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Solution

The fourth proportional to 438,656.28, 658,227.71 and 214,018.57 is: 321,146.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,656.28 : 658,227.71 = 214,018.57 : x
  2. Step 2: Convert to fraction form
    438,656.28/658,227.71 = 214,018.57/x
  3. Step 3: Cross multiply
    438,656.28x = 658,227.71 × 214,018.57
  4. Step 4: Simplify right side
    438,656.28x = 140,872,953,228.58
  5. Step 5: Solve for x
    x = 140,872,953,228.58/438,656.28
  6. Step 6: Final answer
    x = 321,146.56

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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.