Finding the Fourth Proportional to 280,669,572.90, 420,972,195.87 and 73,427,982.75
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Solution
The fourth proportional to 280,669,572.90, 420,972,195.87 and 73,427,982.75 is: 110,133,559.61
Step by Step Solution
- Step 1: Write the proportion equation
280,669,572.90 : 420,972,195.87 = 73,427,982.75 : x - Step 2: Convert to fraction form
280,669,572.90/420,972,195.87 = 73,427,982.75/x - Step 3: Cross multiply
280,669,572.90x = 420,972,195.87 × 73,427,982.75 - Step 4: Simplify right side
280,669,572.90x = 30,911,139,136,571,980 - Step 5: Solve for x
x = 30,911,139,136,571,980/280,669,572.90 - Step 6: Final answer
x = 110,133,559.61
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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.