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Finding the Fourth Proportional to 354,620,507.60, 531,930,761.40 and 218,571,611.60

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Solution

The fourth proportional to 354,620,507.60, 531,930,761.40 and 218,571,611.60 is: 327,857,417.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,620,507.60 : 531,930,761.40 = 218,571,611.60 : x
  2. Step 2: Convert to fraction form
    354,620,507.60/531,930,761.40 = 218,571,611.60/x
  3. Step 3: Cross multiply
    354,620,507.60x = 531,930,761.40 × 218,571,611.60
  4. Step 4: Simplify right side
    354,620,507.60x = 116,264,963,778,813,056
  5. Step 5: Solve for x
    x = 116,264,963,778,813,056/354,620,507.60
  6. Step 6: Final answer
    x = 327,857,417.40

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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.