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Finding the Fourth Proportional to 386,995.96, 580,717.90 and 162,336.28

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Solution

The fourth proportional to 386,995.96, 580,717.90 and 162,336.28 is: 243,598.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,995.96 : 580,717.90 = 162,336.28 : x
  2. Step 2: Convert to fraction form
    386,995.96/580,717.90 = 162,336.28/x
  3. Step 3: Cross multiply
    386,995.96x = 580,717.90 × 162,336.28
  4. Step 4: Simplify right side
    386,995.96x = 94,271,583,615.41
  5. Step 5: Solve for x
    x = 94,271,583,615.41/386,995.96
  6. Step 6: Final answer
    x = 243,598.37

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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.