Home / 340,763,939.40-511,145,909.10-211,769,430.60

Finding the Fourth Proportional to 340,763,939.40, 511,145,909.10 and 211,769,430.60

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Solution

The fourth proportional to 340,763,939.40, 511,145,909.10 and 211,769,430.60 is: 317,654,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,763,939.40 : 511,145,909.10 = 211,769,430.60 : x
  2. Step 2: Convert to fraction form
    340,763,939.40/511,145,909.10 = 211,769,430.60/x
  3. Step 3: Cross multiply
    340,763,939.40x = 511,145,909.10 × 211,769,430.60
  4. Step 4: Simplify right side
    340,763,939.40x = 108,245,078,123,626,368
  5. Step 5: Solve for x
    x = 108,245,078,123,626,368/340,763,939.40
  6. Step 6: Final answer
    x = 317,654,145.90

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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.