Home / 280,882,012.80-420,501,873.60-200,260,444.80

Finding the Fourth Proportional to 280,882,012.80, 420,501,873.60 and 200,260,444.80

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Solution

The fourth proportional to 280,882,012.80, 420,501,873.60 and 200,260,444.80 is: 299,805,215.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,882,012.80 : 420,501,873.60 = 200,260,444.80 : x
  2. Step 2: Convert to fraction form
    280,882,012.80/420,501,873.60 = 200,260,444.80/x
  3. Step 3: Cross multiply
    280,882,012.80x = 420,501,873.60 × 200,260,444.80
  4. Step 4: Simplify right side
    280,882,012.80x = 84,209,892,246,369,392
  5. Step 5: Solve for x
    x = 84,209,892,246,369,392/280,882,012.80
  6. Step 6: Final answer
    x = 299,805,215.03

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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.