Finding the Fourth Proportional to 372,414,905.70, 513,853,940.22 and 215,772,474.12
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Solution
The fourth proportional to 372,414,905.70, 513,853,940.22 and 215,772,474.12 is: 297,720,457.27
Step by Step Solution
- Step 1: Write the proportion equation
372,414,905.70 : 513,853,940.22 = 215,772,474.12 : x - Step 2: Convert to fraction form
372,414,905.70/513,853,940.22 = 215,772,474.12/x - Step 3: Cross multiply
372,414,905.70x = 513,853,940.22 × 215,772,474.12 - Step 4: Simplify right side
372,414,905.70x = 110,875,536,017,579,984 - Step 5: Solve for x
x = 110,875,536,017,579,984/372,414,905.70 - Step 6: Final answer
x = 297,720,457.27
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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.