Home / 370,857.83-511,815.51-209,741.54

Finding the Fourth Proportional to 370,857.83, 511,815.51 and 209,741.54

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Solution

The fourth proportional to 370,857.83, 511,815.51 and 209,741.54 is: 289,461.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,857.83 : 511,815.51 = 209,741.54 : x
  2. Step 2: Convert to fraction form
    370,857.83/511,815.51 = 209,741.54/x
  3. Step 3: Cross multiply
    370,857.83x = 511,815.51 × 209,741.54
  4. Step 4: Simplify right side
    370,857.83x = 107,348,970,704.21
  5. Step 5: Solve for x
    x = 107,348,970,704.21/370,857.83
  6. Step 6: Final answer
    x = 289,461.25

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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.