Finding the Fourth Proportional to 395,139,260.20, 545,291,753.10 and 216,527,503.75
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Solution
The fourth proportional to 395,139,260.20, 545,291,753.10 and 216,527,503.75 is: 298,807,721.75
Step by Step Solution
- Step 1: Write the proportion equation
395,139,260.20 : 545,291,753.10 = 216,527,503.75 : x - Step 2: Convert to fraction form
395,139,260.20/545,291,753.10 = 216,527,503.75/x - Step 3: Cross multiply
395,139,260.20x = 545,291,753.10 × 216,527,503.75 - Step 4: Simplify right side
395,139,260.20x = 118,070,662,114,204,336 - Step 5: Solve for x
x = 118,070,662,114,204,336/395,139,260.20 - Step 6: Final answer
x = 298,807,721.75
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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.