Home / 407,971,052.88-612,137,293.60-213,836,331.12

Finding the Fourth Proportional to 407,971,052.88, 612,137,293.60 and 213,836,331.12

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Solution

The fourth proportional to 407,971,052.88, 612,137,293.60 and 213,836,331.12 is: 320,849,217.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,971,052.88 : 612,137,293.60 = 213,836,331.12 : x
  2. Step 2: Convert to fraction form
    407,971,052.88/612,137,293.60 = 213,836,331.12/x
  3. Step 3: Cross multiply
    407,971,052.88x = 612,137,293.60 × 213,836,331.12
  4. Step 4: Simplify right side
    407,971,052.88x = 130,897,193,005,150,272
  5. Step 5: Solve for x
    x = 130,897,193,005,150,272/407,971,052.88
  6. Step 6: Final answer
    x = 320,849,217.32

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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.