Home / 353,678,579.20-530,517,868.80-209,997,452.80

Finding the Fourth Proportional to 353,678,579.20, 530,517,868.80 and 209,997,452.80

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Solution

The fourth proportional to 353,678,579.20, 530,517,868.80 and 209,997,452.80 is: 314,996,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,678,579.20 : 530,517,868.80 = 209,997,452.80 : x
  2. Step 2: Convert to fraction form
    353,678,579.20/530,517,868.80 = 209,997,452.80/x
  3. Step 3: Cross multiply
    353,678,579.20x = 530,517,868.80 × 209,997,452.80
  4. Step 4: Simplify right side
    353,678,579.20x = 111,407,401,112,884,608
  5. Step 5: Solve for x
    x = 111,407,401,112,884,608/353,678,579.20
  6. Step 6: Final answer
    x = 314,996,179.20

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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.