Home / 279,938,709.60-419,908,064.40-211,914,261.60

Finding the Fourth Proportional to 279,938,709.60, 419,908,064.40 and 211,914,261.60

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Solution

The fourth proportional to 279,938,709.60, 419,908,064.40 and 211,914,261.60 is: 317,871,392.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938,709.60 : 419,908,064.40 = 211,914,261.60 : x
  2. Step 2: Convert to fraction form
    279,938,709.60/419,908,064.40 = 211,914,261.60/x
  3. Step 3: Cross multiply
    279,938,709.60x = 419,908,064.40 × 211,914,261.60
  4. Step 4: Simplify right side
    279,938,709.60x = 88,984,507,407,211,232
  5. Step 5: Solve for x
    x = 88,984,507,407,211,232/279,938,709.60
  6. Step 6: Final answer
    x = 317,871,392.40

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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.