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Finding the Fourth Proportional to 290,304,293.70, 435,456,440.55 and 218,640,677.70

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Solution

The fourth proportional to 290,304,293.70, 435,456,440.55 and 218,640,677.70 is: 327,961,016.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,304,293.70 : 435,456,440.55 = 218,640,677.70 : x
  2. Step 2: Convert to fraction form
    290,304,293.70/435,456,440.55 = 218,640,677.70/x
  3. Step 3: Cross multiply
    290,304,293.70x = 435,456,440.55 × 218,640,677.70
  4. Step 4: Simplify right side
    290,304,293.70x = 95,208,491,270,681,760
  5. Step 5: Solve for x
    x = 95,208,491,270,681,760/290,304,293.70
  6. Step 6: Final answer
    x = 327,961,016.55

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1.5x scale

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.