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Finding the Fourth Proportional to 370,411.88, 511,157.92 and 217,447.64

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Solution

The fourth proportional to 370,411.88, 511,157.92 and 217,447.64 is: 300,071.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,411.88 : 511,157.92 = 217,447.64 : x
  2. Step 2: Convert to fraction form
    370,411.88/511,157.92 = 217,447.64/x
  3. Step 3: Cross multiply
    370,411.88x = 511,157.92 × 217,447.64
  4. Step 4: Simplify right side
    370,411.88x = 111,150,083,371.31
  5. Step 5: Solve for x
    x = 111,150,083,371.31/370,411.88
  6. Step 6: Final answer
    x = 300,071.59

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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.