Home / 280,513,007.70-420,769,511.55-269,763,465.30

Finding the Fourth Proportional to 280,513,007.70, 420,769,511.55 and 269,763,465.30

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Solution

The fourth proportional to 280,513,007.70, 420,769,511.55 and 269,763,465.30 is: 404,645,197.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,513,007.70 : 420,769,511.55 = 269,763,465.30 : x
  2. Step 2: Convert to fraction form
    280,513,007.70/420,769,511.55 = 269,763,465.30/x
  3. Step 3: Cross multiply
    280,513,007.70x = 420,769,511.55 × 269,763,465.30
  4. Step 4: Simplify right side
    280,513,007.70x = 113,508,241,528,316,384
  5. Step 5: Solve for x
    x = 113,508,241,528,316,384/280,513,007.70
  6. Step 6: Final answer
    x = 404,645,197.95

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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.