Finding the Fourth Proportional to 312,304,985.16, 430,973,544.96 and 173,072,757.48
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Solution
The fourth proportional to 312,304,985.16, 430,973,544.96 and 173,072,757.48 is: 238,836,340.67
Step by Step Solution
- Step 1: Write the proportion equation
312,304,985.16 : 430,973,544.96 = 173,072,757.48 : x - Step 2: Convert to fraction form
312,304,985.16/430,973,544.96 = 173,072,757.48/x - Step 3: Cross multiply
312,304,985.16x = 430,973,544.96 × 173,072,757.48 - Step 4: Simplify right side
312,304,985.16x = 74,589,779,827,157,952 - Step 5: Solve for x
x = 74,589,779,827,157,952/312,304,985.16 - Step 6: Final answer
x = 238,836,340.67
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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.