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Finding the Fourth Proportional to 323,790.24, 485,568.72 and 136,816.32

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Solution

The fourth proportional to 323,790.24, 485,568.72 and 136,816.32 is: 205,175.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,790.24 : 485,568.72 = 136,816.32 : x
  2. Step 2: Convert to fraction form
    323,790.24/485,568.72 = 136,816.32/x
  3. Step 3: Cross multiply
    323,790.24x = 485,568.72 × 136,816.32
  4. Step 4: Simplify right side
    323,790.24x = 66,433,725,377.51
  5. Step 5: Solve for x
    x = 66,433,725,377.51/323,790.24
  6. Step 6: Final answer
    x = 205,175.19

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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.