Home / 380,947,365.72-525,705,196.68-211,399,906.32

Finding the Fourth Proportional to 380,947,365.72, 525,705,196.68 and 211,399,906.32

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Solution

The fourth proportional to 380,947,365.72, 525,705,196.68 and 211,399,906.32 is: 291,730,667.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,947,365.72 : 525,705,196.68 = 211,399,906.32 : x
  2. Step 2: Convert to fraction form
    380,947,365.72/525,705,196.68 = 211,399,906.32/x
  3. Step 3: Cross multiply
    380,947,365.72x = 525,705,196.68 × 211,399,906.32
  4. Step 4: Simplify right side
    380,947,365.72x = 111,134,029,330,089,168
  5. Step 5: Solve for x
    x = 111,134,029,330,089,168/380,947,365.72
  6. Step 6: Final answer
    x = 291,730,667.62

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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.