Home / 216,010.40-324,015.60-121,143.20

Finding the Fourth Proportional to 216,010.40, 324,015.60 and 121,143.20

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Solution

The fourth proportional to 216,010.40, 324,015.60 and 121,143.20 is: 181,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,010.40 : 324,015.60 = 121,143.20 : x
  2. Step 2: Convert to fraction form
    216,010.40/324,015.60 = 121,143.20/x
  3. Step 3: Cross multiply
    216,010.40x = 324,015.60 × 121,143.20
  4. Step 4: Simplify right side
    216,010.40x = 39,252,286,633.92
  5. Step 5: Solve for x
    x = 39,252,286,633.92/216,010.40
  6. Step 6: Final answer
    x = 181,714.80

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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.