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Finding the Fourth Proportional to 370,535.21, 511,344.39 and 217,576.78

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Solution

The fourth proportional to 370,535.21, 511,344.39 and 217,576.78 is: 300,259.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,535.21 : 511,344.39 = 217,576.78 : x
  2. Step 2: Convert to fraction form
    370,535.21/511,344.39 = 217,576.78/x
  3. Step 3: Cross multiply
    370,535.21x = 511,344.39 × 217,576.78
  4. Step 4: Simplify right side
    370,535.21x = 111,256,668,261.13
  5. Step 5: Solve for x
    x = 111,256,668,261.13/370,535.21
  6. Step 6: Final answer
    x = 300,259.37

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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.