Home / 370,765.28-511,636.40-209,610.74

Finding the Fourth Proportional to 370,765.28, 511,636.40 and 209,610.74

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Solution

The fourth proportional to 370,765.28, 511,636.40 and 209,610.74 is: 289,251.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,765.28 : 511,636.40 = 209,610.74 : x
  2. Step 2: Convert to fraction form
    370,765.28/511,636.40 = 209,610.74/x
  3. Step 3: Cross multiply
    370,765.28x = 511,636.40 × 209,610.74
  4. Step 4: Simplify right side
    370,765.28x = 107,244,484,414.94
  5. Step 5: Solve for x
    x = 107,244,484,414.94/370,765.28
  6. Step 6: Final answer
    x = 289,251.69

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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.