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Finding the Fourth Proportional to 290,359.35, 400,630.41 and 163,026.54

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Solution

The fourth proportional to 290,359.35, 400,630.41 and 163,026.54 is: 224,939.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,359.35 : 400,630.41 = 163,026.54 : x
  2. Step 2: Convert to fraction form
    290,359.35/400,630.41 = 163,026.54/x
  3. Step 3: Cross multiply
    290,359.35x = 400,630.41 × 163,026.54
  4. Step 4: Simplify right side
    290,359.35x = 65,313,389,561.08
  5. Step 5: Solve for x
    x = 65,313,389,561.08/290,359.35
  6. Step 6: Final answer
    x = 224,939.85

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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.