Home / 372,121.56-513,516.78-210,991.32

Finding the Fourth Proportional to 372,121.56, 513,516.78 and 210,991.32

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Solution

The fourth proportional to 372,121.56, 513,516.78 and 210,991.32 is: 291,161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,121.56 : 513,516.78 = 210,991.32 : x
  2. Step 2: Convert to fraction form
    372,121.56/513,516.78 = 210,991.32/x
  3. Step 3: Cross multiply
    372,121.56x = 513,516.78 × 210,991.32
  4. Step 4: Simplify right side
    372,121.56x = 108,347,583,254.35
  5. Step 5: Solve for x
    x = 108,347,583,254.35/372,121.56
  6. Step 6: Final answer
    x = 291,161.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.