Home / 280,922.24-421,395.66-81,262.81

Finding the Fourth Proportional to 280,922.24, 421,395.66 and 81,262.81

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Solution

The fourth proportional to 280,922.24, 421,395.66 and 81,262.81 is: 121,897.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,922.24 : 421,395.66 = 81,262.81 : x
  2. Step 2: Convert to fraction form
    280,922.24/421,395.66 = 81,262.81/x
  3. Step 3: Cross multiply
    280,922.24x = 421,395.66 × 81,262.81
  4. Step 4: Simplify right side
    280,922.24x = 34,243,793,346.43
  5. Step 5: Solve for x
    x = 34,243,793,346.43/280,922.24
  6. Step 6: Final answer
    x = 121,897.77

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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.