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Finding the Fourth Proportional to 398,778.94, 550,295.52 and 237,630.40

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Solution

The fourth proportional to 398,778.94, 550,295.52 and 237,630.40 is: 327,918.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,778.94 : 550,295.52 = 237,630.40 : x
  2. Step 2: Convert to fraction form
    398,778.94/550,295.52 = 237,630.40/x
  3. Step 3: Cross multiply
    398,778.94x = 550,295.52 × 237,630.40
  4. Step 4: Simplify right side
    398,778.94x = 130,766,944,535.81
  5. Step 5: Solve for x
    x = 130,766,944,535.81/398,778.94
  6. Step 6: Final answer
    x = 327,918.38

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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.