Home / 290,128.50-400,378.77-169,353.54

Finding the Fourth Proportional to 290,128.50, 400,378.77 and 169,353.54

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Solution

The fourth proportional to 290,128.50, 400,378.77 and 169,353.54 is: 233,708.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,128.50 : 400,378.77 = 169,353.54 : x
  2. Step 2: Convert to fraction form
    290,128.50/400,378.77 = 169,353.54/x
  3. Step 3: Cross multiply
    290,128.50x = 400,378.77 × 169,353.54
  4. Step 4: Simplify right side
    290,128.50x = 67,805,562,040.35
  5. Step 5: Solve for x
    x = 67,805,562,040.35/290,128.50
  6. Step 6: Final answer
    x = 233,708.73

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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.