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Finding the Fourth Proportional to 370,808.80, 511,726.22 and 209,687.96

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Solution

The fourth proportional to 370,808.80, 511,726.22 and 209,687.96 is: 289,375.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,808.80 : 511,726.22 = 209,687.96 : x
  2. Step 2: Convert to fraction form
    370,808.80/511,726.22 = 209,687.96/x
  3. Step 3: Cross multiply
    370,808.80x = 511,726.22 × 209,687.96
  4. Step 4: Simplify right side
    370,808.80x = 107,302,827,150.31
  5. Step 5: Solve for x
    x = 107,302,827,150.31/370,808.80
  6. Step 6: Final answer
    x = 289,375.08

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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.