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Finding the Fourth Proportional to 386,162.91, 579,244.46 and 105,680.16

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Solution

The fourth proportional to 386,162.91, 579,244.46 and 105,680.16 is: 158,520.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,162.91 : 579,244.46 = 105,680.16 : x
  2. Step 2: Convert to fraction form
    386,162.91/579,244.46 = 105,680.16/x
  3. Step 3: Cross multiply
    386,162.91x = 579,244.46 × 105,680.16
  4. Step 4: Simplify right side
    386,162.91x = 61,214,646,683.51
  5. Step 5: Solve for x
    x = 61,214,646,683.51/386,162.91
  6. Step 6: Final answer
    x = 158,520.26

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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.