Home / 265,617,708.80-398,426,563.20-211,869,996.80

Finding the Fourth Proportional to 265,617,708.80, 398,426,563.20 and 211,869,996.80

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Solution

The fourth proportional to 265,617,708.80, 398,426,563.20 and 211,869,996.80 is: 317,804,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,617,708.80 : 398,426,563.20 = 211,869,996.80 : x
  2. Step 2: Convert to fraction form
    265,617,708.80/398,426,563.20 = 211,869,996.80/x
  3. Step 3: Cross multiply
    265,617,708.80x = 398,426,563.20 × 211,869,996.80
  4. Step 4: Simplify right side
    265,617,708.80x = 84,414,634,670,218,992
  5. Step 5: Solve for x
    x = 84,414,634,670,218,992/265,617,708.80
  6. Step 6: Final answer
    x = 317,804,995.20

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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.