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Finding the Fourth Proportional to 214,641.58, 321,962.36 and 74,400.20

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Solution

The fourth proportional to 214,641.58, 321,962.36 and 74,400.20 is: 111,600.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,641.58 : 321,962.36 = 74,400.20 : x
  2. Step 2: Convert to fraction form
    214,641.58/321,962.36 = 74,400.20/x
  3. Step 3: Cross multiply
    214,641.58x = 321,962.36 × 74,400.20
  4. Step 4: Simplify right side
    214,641.58x = 23,954,063,976.47
  5. Step 5: Solve for x
    x = 23,954,063,976.47/214,641.58
  6. Step 6: Final answer
    x = 111,600.30

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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.