Finding the Fourth Proportional to 221,272,882.14, 305,357,029.56 and 122,153,765.87
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Solution
The fourth proportional to 221,272,882.14, 305,357,029.56 and 122,153,765.87 is: 168,572,446.54
Step by Step Solution
- Step 1: Write the proportion equation
221,272,882.14 : 305,357,029.56 = 122,153,765.87 : x - Step 2: Convert to fraction form
221,272,882.14/305,357,029.56 = 122,153,765.87/x - Step 3: Cross multiply
221,272,882.14x = 305,357,029.56 × 122,153,765.87 - Step 4: Simplify right side
221,272,882.14x = 37,300,511,095,630,912 - Step 5: Solve for x
x = 37,300,511,095,630,912/221,272,882.14 - Step 6: Final answer
x = 168,572,446.54
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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.