Home / 290,396,072.80-435,881,089.02-154,081,456.28

Finding the Fourth Proportional to 290,396,072.80, 435,881,089.02 and 154,081,456.28

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Solution

The fourth proportional to 290,396,072.80, 435,881,089.02 and 154,081,456.28 is: 231,274,453.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,396,072.80 : 435,881,089.02 = 154,081,456.28 : x
  2. Step 2: Convert to fraction form
    290,396,072.80/435,881,089.02 = 154,081,456.28/x
  3. Step 3: Cross multiply
    290,396,072.80x = 435,881,089.02 × 154,081,456.28
  4. Step 4: Simplify right side
    290,396,072.80x = 67,161,192,961,113,912
  5. Step 5: Solve for x
    x = 67,161,192,961,113,912/290,396,072.80
  6. Step 6: Final answer
    x = 231,274,453.24

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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.