Home / 270,228.28-405,400.38-80,703.58

Finding the Fourth Proportional to 270,228.28, 405,400.38 and 80,703.58

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Solution

The fourth proportional to 270,228.28, 405,400.38 and 80,703.58 is: 121,072.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,228.28 : 405,400.38 = 80,703.58 : x
  2. Step 2: Convert to fraction form
    270,228.28/405,400.38 = 80,703.58/x
  3. Step 3: Cross multiply
    270,228.28x = 405,400.38 × 80,703.58
  4. Step 4: Simplify right side
    270,228.28x = 32,717,261,999.36
  5. Step 5: Solve for x
    x = 32,717,261,999.36/270,228.28
  6. Step 6: Final answer
    x = 121,072.68

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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.