Home / 323,981.27-485,916.55-87,268.59

Finding the Fourth Proportional to 323,981.27, 485,916.55 and 87,268.59

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Solution

The fourth proportional to 323,981.27, 485,916.55 and 87,268.59 is: 130,887.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,981.27 : 485,916.55 = 87,268.59 : x
  2. Step 2: Convert to fraction form
    323,981.27/485,916.55 = 87,268.59/x
  3. Step 3: Cross multiply
    323,981.27x = 485,916.55 × 87,268.59
  4. Step 4: Simplify right side
    323,981.27x = 42,405,251,739.82
  5. Step 5: Solve for x
    x = 42,405,251,739.82/323,981.27
  6. Step 6: Final answer
    x = 130,887.97

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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.