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Finding the Fourth Proportional to 398,289.06, 550,176.03 and 369,945.54

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Solution

The fourth proportional to 398,289.06, 550,176.03 and 369,945.54 is: 511,023.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,289.06 : 550,176.03 = 369,945.54 : x
  2. Step 2: Convert to fraction form
    398,289.06/550,176.03 = 369,945.54/x
  3. Step 3: Cross multiply
    398,289.06x = 550,176.03 × 369,945.54
  4. Step 4: Simplify right side
    398,289.06x = 203,535,168,513.41
  5. Step 5: Solve for x
    x = 203,535,168,513.41/398,289.06
  6. Step 6: Final answer
    x = 511,023.75

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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.