Home / 386,185.90-578,343.68-196,146.40

Finding the Fourth Proportional to 386,185.90, 578,343.68 and 196,146.40

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Solution

The fourth proportional to 386,185.90, 578,343.68 and 196,146.40 is: 293,744.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,185.90 : 578,343.68 = 196,146.40 : x
  2. Step 2: Convert to fraction form
    386,185.90/578,343.68 = 196,146.40/x
  3. Step 3: Cross multiply
    386,185.90x = 578,343.68 × 196,146.40
  4. Step 4: Simplify right side
    386,185.90x = 113,440,030,794.75
  5. Step 5: Solve for x
    x = 113,440,030,794.75/386,185.90
  6. Step 6: Final answer
    x = 293,744.62

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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.