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Finding the Fourth Proportional to 247,788,604.70, 371,682,907.05 and 207,477,820.70

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Solution

The fourth proportional to 247,788,604.70, 371,682,907.05 and 207,477,820.70 is: 311,216,731.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,788,604.70 : 371,682,907.05 = 207,477,820.70 : x
  2. Step 2: Convert to fraction form
    247,788,604.70/371,682,907.05 = 207,477,820.70/x
  3. Step 3: Cross multiply
    247,788,604.70x = 371,682,907.05 × 207,477,820.70
  4. Step 4: Simplify right side
    247,788,604.70x = 77,115,959,546,174,656
  5. Step 5: Solve for x
    x = 77,115,959,546,174,656/247,788,604.70
  6. Step 6: Final answer
    x = 311,216,731.05

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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.