Home / 215,090.40-322,693.20-191,877.60

Finding the Fourth Proportional to 215,090.40, 322,693.20 and 191,877.60

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Solution

The fourth proportional to 215,090.40, 322,693.20 and 191,877.60 is: 287,867.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,090.40 : 322,693.20 = 191,877.60 : x
  2. Step 2: Convert to fraction form
    215,090.40/322,693.20 = 191,877.60/x
  3. Step 3: Cross multiply
    215,090.40x = 322,693.20 × 191,877.60
  4. Step 4: Simplify right side
    215,090.40x = 61,917,596,752.32
  5. Step 5: Solve for x
    x = 61,917,596,752.32/215,090.40
  6. Step 6: Final answer
    x = 287,867.78

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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.