Home / 285,429,297.20-428,143,945.80-199,335,855.20

Finding the Fourth Proportional to 285,429,297.20, 428,143,945.80 and 199,335,855.20

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Solution

The fourth proportional to 285,429,297.20, 428,143,945.80 and 199,335,855.20 is: 299,003,782.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,429,297.20 : 428,143,945.80 = 199,335,855.20 : x
  2. Step 2: Convert to fraction form
    285,429,297.20/428,143,945.80 = 199,335,855.20/x
  3. Step 3: Cross multiply
    285,429,297.20x = 428,143,945.80 × 199,335,855.20
  4. Step 4: Simplify right side
    285,429,297.20x = 85,344,439,584,745,440
  5. Step 5: Solve for x
    x = 85,344,439,584,745,440/285,429,297.20
  6. Step 6: Final answer
    x = 299,003,782.80

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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.