Home / 214,840.80-321,872.40-131,637.60

Finding the Fourth Proportional to 214,840.80, 321,872.40 and 131,637.60

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Solution

The fourth proportional to 214,840.80, 321,872.40 and 131,637.60 is: 197,218.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,840.80 : 321,872.40 = 131,637.60 : x
  2. Step 2: Convert to fraction form
    214,840.80/321,872.40 = 131,637.60/x
  3. Step 3: Cross multiply
    214,840.80x = 321,872.40 × 131,637.60
  4. Step 4: Simplify right side
    214,840.80x = 42,370,510,242.24
  5. Step 5: Solve for x
    x = 42,370,510,242.24/214,840.80
  6. Step 6: Final answer
    x = 197,218.17

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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.