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Finding the Fourth Proportional to 210,278.69, 315,422.51 and 75,351.56

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Solution

The fourth proportional to 210,278.69, 315,422.51 and 75,351.56 is: 113,028.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,278.69 : 315,422.51 = 75,351.56 : x
  2. Step 2: Convert to fraction form
    210,278.69/315,422.51 = 75,351.56/x
  3. Step 3: Cross multiply
    210,278.69x = 315,422.51 × 75,351.56
  4. Step 4: Simplify right side
    210,278.69x = 23,767,576,233.75
  5. Step 5: Solve for x
    x = 23,767,576,233.75/210,278.69
  6. Step 6: Final answer
    x = 113,028.94

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1.5x scale

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.