Home / 212,939.74-319,409.61-55,168.21

Finding the Fourth Proportional to 212,939.74, 319,409.61 and 55,168.21

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Solution

The fourth proportional to 212,939.74, 319,409.61 and 55,168.21 is: 82,752.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,939.74 : 319,409.61 = 55,168.21 : x
  2. Step 2: Convert to fraction form
    212,939.74/319,409.61 = 55,168.21/x
  3. Step 3: Cross multiply
    212,939.74x = 319,409.61 × 55,168.21
  4. Step 4: Simplify right side
    212,939.74x = 17,621,256,440.50
  5. Step 5: Solve for x
    x = 17,621,256,440.50/212,939.74
  6. Step 6: Final answer
    x = 82,752.32

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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.