Home / 389,913.85-585,087.05-190,235.89

Finding the Fourth Proportional to 389,913.85, 585,087.05 and 190,235.89

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Solution

The fourth proportional to 389,913.85, 585,087.05 and 190,235.89 is: 285,459.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,913.85 : 585,087.05 = 190,235.89 : x
  2. Step 2: Convert to fraction form
    389,913.85/585,087.05 = 190,235.89/x
  3. Step 3: Cross multiply
    389,913.85x = 585,087.05 × 190,235.89
  4. Step 4: Simplify right side
    389,913.85x = 111,304,555,821.10
  5. Step 5: Solve for x
    x = 111,304,555,821.10/389,913.85
  6. Step 6: Final answer
    x = 285,459.35

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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.