Home / 290,331.82-400,647.58-163,012.78

Finding the Fourth Proportional to 290,331.82, 400,647.58 and 163,012.78

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Solution

The fourth proportional to 290,331.82, 400,647.58 and 163,012.78 is: 224,951.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,331.82 : 400,647.58 = 163,012.78 : x
  2. Step 2: Convert to fraction form
    290,331.82/400,647.58 = 163,012.78/x
  3. Step 3: Cross multiply
    290,331.82x = 400,647.58 × 163,012.78
  4. Step 4: Simplify right side
    290,331.82x = 65,310,675,816.07
  5. Step 5: Solve for x
    x = 65,310,675,816.07/290,331.82
  6. Step 6: Final answer
    x = 224,951.84

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1.5x scale

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.