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Finding the Fourth Proportional to 290,397.03, 400,750.38 and 163,084.47

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Solution

The fourth proportional to 290,397.03, 400,750.38 and 163,084.47 is: 225,057.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,397.03 : 400,750.38 = 163,084.47 : x
  2. Step 2: Convert to fraction form
    290,397.03/400,750.38 = 163,084.47/x
  3. Step 3: Cross multiply
    290,397.03x = 400,750.38 × 163,084.47
  4. Step 4: Simplify right side
    290,397.03x = 65,356,163,324.60
  5. Step 5: Solve for x
    x = 65,356,163,324.60/290,397.03
  6. Step 6: Final answer
    x = 225,057.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.