Finding the Fourth Proportional to 198,311,201.32, 273,381,026.52 and 138,587,070.28
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Solution
The fourth proportional to 198,311,201.32, 273,381,026.52 and 138,587,070.28 is: 191,048,590.72
Step by Step Solution
- Step 1: Write the proportion equation
198,311,201.32 : 273,381,026.52 = 138,587,070.28 : x - Step 2: Convert to fraction form
198,311,201.32/273,381,026.52 = 138,587,070.28/x - Step 3: Cross multiply
198,311,201.32x = 273,381,026.52 × 138,587,070.28 - Step 4: Simplify right side
198,311,201.32x = 37,887,075,535,545,784 - Step 5: Solve for x
x = 37,887,075,535,545,784/198,311,201.32 - Step 6: Final answer
x = 191,048,590.72
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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.