Home / 395,137,636.56-545,289,938.40-221,297,380.56

Finding the Fourth Proportional to 395,137,636.56, 545,289,938.40 and 221,297,380.56

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Solution

The fourth proportional to 395,137,636.56, 545,289,938.40 and 221,297,380.56 is: 305,390,385.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,137,636.56 : 545,289,938.40 = 221,297,380.56 : x
  2. Step 2: Convert to fraction form
    395,137,636.56/545,289,938.40 = 221,297,380.56/x
  3. Step 3: Cross multiply
    395,137,636.56x = 545,289,938.40 × 221,297,380.56
  4. Step 4: Simplify right side
    395,137,636.56x = 120,671,235,013,643,760
  5. Step 5: Solve for x
    x = 120,671,235,013,643,760/395,137,636.56
  6. Step 6: Final answer
    x = 305,390,385.14

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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.