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Finding the Fourth Proportional to 398,776.94, 550,292.76 and 237,628.40

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Solution

The fourth proportional to 398,776.94, 550,292.76 and 237,628.40 is: 327,915.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,776.94 : 550,292.76 = 237,628.40 : x
  2. Step 2: Convert to fraction form
    398,776.94/550,292.76 = 237,628.40/x
  3. Step 3: Cross multiply
    398,776.94x = 550,292.76 × 237,628.40
  4. Step 4: Simplify right side
    398,776.94x = 130,765,188,090.38
  5. Step 5: Solve for x
    x = 130,765,188,090.38/398,776.94
  6. Step 6: Final answer
    x = 327,915.62

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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.