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Finding the Fourth Proportional to 370,408.88, 511,153.79 and 217,444.64

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Solution

The fourth proportional to 370,408.88, 511,153.79 and 217,444.64 is: 300,067.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,408.88 : 511,153.79 = 217,444.64 : x
  2. Step 2: Convert to fraction form
    370,408.88/511,153.79 = 217,444.64/x
  3. Step 3: Cross multiply
    370,408.88x = 511,153.79 × 217,444.64
  4. Step 4: Simplify right side
    370,408.88x = 111,147,648,208.19
  5. Step 5: Solve for x
    x = 111,147,648,208.19/370,408.88
  6. Step 6: Final answer
    x = 300,067.45

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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.