Home / 380,565.07-570,912.45-131,188.75

Finding the Fourth Proportional to 380,565.07, 570,912.45 and 131,188.75

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Solution

The fourth proportional to 380,565.07, 570,912.45 and 131,188.75 is: 196,805.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,565.07 : 570,912.45 = 131,188.75 : x
  2. Step 2: Convert to fraction form
    380,565.07/570,912.45 = 131,188.75/x
  3. Step 3: Cross multiply
    380,565.07x = 570,912.45 × 131,188.75
  4. Step 4: Simplify right side
    380,565.07x = 74,897,290,674.94
  5. Step 5: Solve for x
    x = 74,897,290,674.94/380,565.07
  6. Step 6: Final answer
    x = 196,805.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.