Home / 370,819.82-511,741.40-209,698.88

Finding the Fourth Proportional to 370,819.82, 511,741.40 and 209,698.88

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Solution

The fourth proportional to 370,819.82, 511,741.40 and 209,698.88 is: 289,390.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,819.82 : 511,741.40 = 209,698.88 : x
  2. Step 2: Convert to fraction form
    370,819.82/511,741.40 = 209,698.88/x
  3. Step 3: Cross multiply
    370,819.82x = 511,741.40 × 209,698.88
  4. Step 4: Simplify right side
    370,819.82x = 107,311,594,822.43
  5. Step 5: Solve for x
    x = 107,311,594,822.43/370,819.82
  6. Step 6: Final answer
    x = 289,390.13

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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.