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Finding the Fourth Proportional to 265,647,765.80, 366,578,126.34 and 154,129,968.20

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Solution

The fourth proportional to 265,647,765.80, 366,578,126.34 and 154,129,968.20 is: 212,690,194.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,647,765.80 : 366,578,126.34 = 154,129,968.20 : x
  2. Step 2: Convert to fraction form
    265,647,765.80/366,578,126.34 = 154,129,968.20/x
  3. Step 3: Cross multiply
    265,647,765.80x = 366,578,126.34 × 154,129,968.20
  4. Step 4: Simplify right side
    265,647,765.80x = 56,500,674,955,599,776
  5. Step 5: Solve for x
    x = 56,500,674,955,599,776/265,647,765.80
  6. Step 6: Final answer
    x = 212,690,194.42

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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.