Home / 340,763,856.40-511,145,784.60-211,769,347.60

Finding the Fourth Proportional to 340,763,856.40, 511,145,784.60 and 211,769,347.60

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Solution

The fourth proportional to 340,763,856.40, 511,145,784.60 and 211,769,347.60 is: 317,654,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,763,856.40 : 511,145,784.60 = 211,769,347.60 : x
  2. Step 2: Convert to fraction form
    340,763,856.40/511,145,784.60 = 211,769,347.60/x
  3. Step 3: Cross multiply
    340,763,856.40x = 511,145,784.60 × 211,769,347.60
  4. Step 4: Simplify right side
    340,763,856.40x = 108,245,009,333,232,128
  5. Step 5: Solve for x
    x = 108,245,009,333,232,128/340,763,856.40
  6. Step 6: Final answer
    x = 317,654,021.40

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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.