Finding the Fourth Proportional to 355,067,275.99, 490,007,973.40 and 198,434,378.36
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Solution
The fourth proportional to 355,067,275.99, 490,007,973.40 and 198,434,378.36 is: 273,847,899.17
Step by Step Solution
- Step 1: Write the proportion equation
355,067,275.99 : 490,007,973.40 = 198,434,378.36 : x - Step 2: Convert to fraction form
355,067,275.99/490,007,973.40 = 198,434,378.36/x - Step 3: Cross multiply
355,067,275.99x = 490,007,973.40 × 198,434,378.36 - Step 4: Simplify right side
355,067,275.99x = 97,234,427,593,801,344 - Step 5: Solve for x
x = 97,234,427,593,801,344/355,067,275.99 - Step 6: Final answer
x = 273,847,899.17
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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.