Home / 287,424,145.60-431,136,218.40-82,958,891.20

Finding the Fourth Proportional to 287,424,145.60, 431,136,218.40 and 82,958,891.20

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Solution

The fourth proportional to 287,424,145.60, 431,136,218.40 and 82,958,891.20 is: 124,438,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,424,145.60 : 431,136,218.40 = 82,958,891.20 : x
  2. Step 2: Convert to fraction form
    287,424,145.60/431,136,218.40 = 82,958,891.20/x
  3. Step 3: Cross multiply
    287,424,145.60x = 431,136,218.40 × 82,958,891.20
  4. Step 4: Simplify right side
    287,424,145.60x = 35,766,582,634,625,036
  5. Step 5: Solve for x
    x = 35,766,582,634,625,036/287,424,145.60
  6. Step 6: Final answer
    x = 124,438,336.80

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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.