Home / 370,439.60-511,290.24-209,387.84

Finding the Fourth Proportional to 370,439.60, 511,290.24 and 209,387.84

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Solution

The fourth proportional to 370,439.60, 511,290.24 and 209,387.84 is: 289,002.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,439.60 : 511,290.24 = 209,387.84 : x
  2. Step 2: Convert to fraction form
    370,439.60/511,290.24 = 209,387.84/x
  3. Step 3: Cross multiply
    370,439.60x = 511,290.24 × 209,387.84
  4. Step 4: Simplify right side
    370,439.60x = 107,057,958,966.68
  5. Step 5: Solve for x
    x = 107,057,958,966.68/370,439.60
  6. Step 6: Final answer
    x = 289,002.47

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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.