Finding the Fourth Proportional to 199,588,420.80, 299,382,631.20 and 70,195,003.20
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Solution
The fourth proportional to 199,588,420.80, 299,382,631.20 and 70,195,003.20 is: 105,292,504.80
Step by Step Solution
- Step 1: Write the proportion equation
199,588,420.80 : 299,382,631.20 = 70,195,003.20 : x - Step 2: Convert to fraction form
199,588,420.80/299,382,631.20 = 70,195,003.20/x - Step 3: Cross multiply
199,588,420.80x = 299,382,631.20 × 70,195,003.20 - Step 4: Simplify right side
199,588,420.80x = 21,015,164,755,108,420 - Step 5: Solve for x
x = 21,015,164,755,108,420/199,588,420.80 - Step 6: Final answer
x = 105,292,504.80
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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.