Home / 210,278.90-315,422.78-75,351.76

Finding the Fourth Proportional to 210,278.90, 315,422.78 and 75,351.76

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Solution

The fourth proportional to 210,278.90, 315,422.78 and 75,351.76 is: 113,029.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,278.90 : 315,422.78 = 75,351.76 : x
  2. Step 2: Convert to fraction form
    210,278.90/315,422.78 = 75,351.76/x
  3. Step 3: Cross multiply
    210,278.90x = 315,422.78 × 75,351.76
  4. Step 4: Simplify right side
    210,278.90x = 23,767,661,617.09
  5. Step 5: Solve for x
    x = 23,767,661,617.09/210,278.90
  6. Step 6: Final answer
    x = 113,029.23

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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.