Home / 290,471,543.40-400,839,060-158,309,704.56

Finding the Fourth Proportional to 290,471,543.40, 400,839,060 and 158,309,704.56

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Solution

The fourth proportional to 290,471,543.40, 400,839,060 and 158,309,704.56 is: 218,461,032.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,471,543.40 : 400,839,060 = 158,309,704.56 : x
  2. Step 2: Convert to fraction form
    290,471,543.40/400,839,060 = 158,309,704.56/x
  3. Step 3: Cross multiply
    290,471,543.40x = 400,839,060 × 158,309,704.56
  4. Step 4: Simplify right side
    290,471,543.40x = 63,456,713,164,708,112
  5. Step 5: Solve for x
    x = 63,456,713,164,708,112/290,471,543.40
  6. Step 6: Final answer
    x = 218,461,032.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.