Home / 290,020,350.86-435,026,266.80-71,670,687.06

Finding the Fourth Proportional to 290,020,350.86, 435,026,266.80 and 71,670,687.06

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Solution

The fourth proportional to 290,020,350.86, 435,026,266.80 and 71,670,687.06 is: 107,504,977.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,020,350.86 : 435,026,266.80 = 71,670,687.06 : x
  2. Step 2: Convert to fraction form
    290,020,350.86/435,026,266.80 = 71,670,687.06/x
  3. Step 3: Cross multiply
    290,020,350.86x = 435,026,266.80 × 71,670,687.06
  4. Step 4: Simplify right side
    290,020,350.86x = 31,178,631,430,702,868
  5. Step 5: Solve for x
    x = 31,178,631,430,702,868/290,020,350.86
  6. Step 6: Final answer
    x = 107,504,977.97

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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.