Home / 371,388,979.80-512,521,436.34-204,143,500.80

Finding the Fourth Proportional to 371,388,979.80, 512,521,436.34 and 204,143,500.80

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Solution

The fourth proportional to 371,388,979.80, 512,521,436.34 and 204,143,500.80 is: 281,720,583.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,388,979.80 : 512,521,436.34 = 204,143,500.80 : x
  2. Step 2: Convert to fraction form
    371,388,979.80/512,521,436.34 = 204,143,500.80/x
  3. Step 3: Cross multiply
    371,388,979.80x = 512,521,436.34 × 204,143,500.80
  4. Step 4: Simplify right side
    371,388,979.80x = 104,627,920,249,491,936
  5. Step 5: Solve for x
    x = 104,627,920,249,491,936/371,388,979.80
  6. Step 6: Final answer
    x = 281,720,583.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.