Home / 290,304,308.70-435,456,463.05-218,640,692.70

Finding the Fourth Proportional to 290,304,308.70, 435,456,463.05 and 218,640,692.70

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Solution

The fourth proportional to 290,304,308.70, 435,456,463.05 and 218,640,692.70 is: 327,961,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,304,308.70 : 435,456,463.05 = 218,640,692.70 : x
  2. Step 2: Convert to fraction form
    290,304,308.70/435,456,463.05 = 218,640,692.70/x
  3. Step 3: Cross multiply
    290,304,308.70x = 435,456,463.05 × 218,640,692.70
  4. Step 4: Simplify right side
    290,304,308.70x = 95,208,502,721,943,952
  5. Step 5: Solve for x
    x = 95,208,502,721,943,952/290,304,308.70
  6. Step 6: Final answer
    x = 327,961,039.05

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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.