Home / 438,655.28-658,226.21-214,017.57

Finding the Fourth Proportional to 438,655.28, 658,226.21 and 214,017.57

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Solution

The fourth proportional to 438,655.28, 658,226.21 and 214,017.57 is: 321,145.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,655.28 : 658,226.21 = 214,017.57 : x
  2. Step 2: Convert to fraction form
    438,655.28/658,226.21 = 214,017.57/x
  3. Step 3: Cross multiply
    438,655.28x = 658,226.21 × 214,017.57
  4. Step 4: Simplify right side
    438,655.28x = 140,871,972,904.42
  5. Step 5: Solve for x
    x = 140,871,972,904.42/438,655.28
  6. Step 6: Final answer
    x = 321,145.06

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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.