Home / 214,190.80-320,897.40-130,987.60

Finding the Fourth Proportional to 214,190.80, 320,897.40 and 130,987.60

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Solution

The fourth proportional to 214,190.80, 320,897.40 and 130,987.60 is: 196,243.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,190.80 : 320,897.40 = 130,987.60 : x
  2. Step 2: Convert to fraction form
    214,190.80/320,897.40 = 130,987.60/x
  3. Step 3: Cross multiply
    214,190.80x = 320,897.40 × 130,987.60
  4. Step 4: Simplify right side
    214,190.80x = 42,033,580,272.24
  5. Step 5: Solve for x
    x = 42,033,580,272.24/214,190.80
  6. Step 6: Final answer
    x = 196,243.63

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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.