Finding the Fourth Proportional to 228,689.19, 315,602.80 and 138,043.98
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Solution
The fourth proportional to 228,689.19, 315,602.80 and 138,043.98 is: 190,507.76
Step by Step Solution
- Step 1: Write the proportion equation
228,689.19 : 315,602.80 = 138,043.98 : x - Step 2: Convert to fraction form
228,689.19/315,602.80 = 138,043.98/x - Step 3: Cross multiply
228,689.19x = 315,602.80 × 138,043.98 - Step 4: Simplify right side
228,689.19x = 43,567,066,266.03 - Step 5: Solve for x
x = 43,567,066,266.03/228,689.19 - Step 6: Final answer
x = 190,507.76
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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.