Home / 290,304,378.45-435,456,567.68-218,640,762.45

Finding the Fourth Proportional to 290,304,378.45, 435,456,567.68 and 218,640,762.45

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Solution

The fourth proportional to 290,304,378.45, 435,456,567.68 and 218,640,762.45 is: 327,961,143.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,304,378.45 : 435,456,567.68 = 218,640,762.45 : x
  2. Step 2: Convert to fraction form
    290,304,378.45/435,456,567.68 = 218,640,762.45/x
  3. Step 3: Cross multiply
    290,304,378.45x = 435,456,567.68 × 218,640,762.45
  4. Step 4: Simplify right side
    290,304,378.45x = 95,208,555,970,322,016
  5. Step 5: Solve for x
    x = 95,208,555,970,322,016/290,304,378.45
  6. Step 6: Final answer
    x = 327,961,143.68

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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.