Home / 212,643.28-318,997.26-72,369.10

Finding the Fourth Proportional to 212,643.28, 318,997.26 and 72,369.10

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Solution

The fourth proportional to 212,643.28, 318,997.26 and 72,369.10 is: 108,564.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,643.28 : 318,997.26 = 72,369.10 : x
  2. Step 2: Convert to fraction form
    212,643.28/318,997.26 = 72,369.10/x
  3. Step 3: Cross multiply
    212,643.28x = 318,997.26 × 72,369.10
  4. Step 4: Simplify right side
    212,643.28x = 23,085,544,608.67
  5. Step 5: Solve for x
    x = 23,085,544,608.67/212,643.28
  6. Step 6: Final answer
    x = 108,564.66

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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.