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Finding the Fourth Proportional to 398,816.96, 598,338.52 and 162,329.36

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Solution

The fourth proportional to 398,816.96, 598,338.52 and 162,329.36 is: 243,540.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,816.96 : 598,338.52 = 162,329.36 : x
  2. Step 2: Convert to fraction form
    398,816.96/598,338.52 = 162,329.36/x
  3. Step 3: Cross multiply
    398,816.96x = 598,338.52 × 162,329.36
  4. Step 4: Simplify right side
    398,816.96x = 97,127,909,014.95
  5. Step 5: Solve for x
    x = 97,127,909,014.95/398,816.96
  6. Step 6: Final answer
    x = 243,540.07

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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.