Home / 370,825.20-511,735.80-209,680.24

Finding the Fourth Proportional to 370,825.20, 511,735.80 and 209,680.24

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Solution

The fourth proportional to 370,825.20, 511,735.80 and 209,680.24 is: 289,357.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,825.20 : 511,735.80 = 209,680.24 : x
  2. Step 2: Convert to fraction form
    370,825.20/511,735.80 = 209,680.24/x
  3. Step 3: Cross multiply
    370,825.20x = 511,735.80 × 209,680.24
  4. Step 4: Simplify right side
    370,825.20x = 107,300,885,360.59
  5. Step 5: Solve for x
    x = 107,300,885,360.59/370,825.20
  6. Step 6: Final answer
    x = 289,357.05

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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.