Home / 290,430,136.18-400,781,926.06-158,268,315.87

Finding the Fourth Proportional to 290,430,136.18, 400,781,926.06 and 158,268,315.87

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Solution

The fourth proportional to 290,430,136.18, 400,781,926.06 and 158,268,315.87 is: 218,403,920.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,430,136.18 : 400,781,926.06 = 158,268,315.87 : x
  2. Step 2: Convert to fraction form
    290,430,136.18/400,781,926.06 = 158,268,315.87/x
  3. Step 3: Cross multiply
    290,430,136.18x = 400,781,926.06 × 158,268,315.87
  4. Step 4: Simplify right side
    290,430,136.18x = 63,431,080,466,647,160
  5. Step 5: Solve for x
    x = 63,431,080,466,647,160/290,430,136.18
  6. Step 6: Final answer
    x = 218,403,920.83

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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.