Home / 287,609,855.80-431,414,783.70-199,603,226.20

Finding the Fourth Proportional to 287,609,855.80, 431,414,783.70 and 199,603,226.20

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Solution

The fourth proportional to 287,609,855.80, 431,414,783.70 and 199,603,226.20 is: 299,404,839.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,609,855.80 : 431,414,783.70 = 199,603,226.20 : x
  2. Step 2: Convert to fraction form
    287,609,855.80/431,414,783.70 = 199,603,226.20/x
  3. Step 3: Cross multiply
    287,609,855.80x = 431,414,783.70 × 199,603,226.20
  4. Step 4: Simplify right side
    287,609,855.80x = 86,111,782,656,895,168
  5. Step 5: Solve for x
    x = 86,111,782,656,895,168/287,609,855.80
  6. Step 6: Final answer
    x = 299,404,839.30

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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.