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Finding the Fourth Proportional to 398,753.69, 598,162.93 and 118,270.13

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Solution

The fourth proportional to 398,753.69, 598,162.93 and 118,270.13 is: 177,414.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,753.69 : 598,162.93 = 118,270.13 : x
  2. Step 2: Convert to fraction form
    398,753.69/598,162.93 = 118,270.13/x
  3. Step 3: Cross multiply
    398,753.69x = 598,162.93 × 118,270.13
  4. Step 4: Simplify right side
    398,753.69x = 70,744,804,205.79
  5. Step 5: Solve for x
    x = 70,744,804,205.79/398,753.69
  6. Step 6: Final answer
    x = 177,414.80

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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.