Finding the Fourth Proportional to 251,336,806.62, 346,847,985.09 and 138,319,310.82
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Solution
The fourth proportional to 251,336,806.62, 346,847,985.09 and 138,319,310.82 is: 190,882,405.57
Step by Step Solution
- Step 1: Write the proportion equation
251,336,806.62 : 346,847,985.09 = 138,319,310.82 : x - Step 2: Convert to fraction form
251,336,806.62/346,847,985.09 = 138,319,310.82/x - Step 3: Cross multiply
251,336,806.62x = 346,847,985.09 × 138,319,310.82 - Step 4: Simplify right side
251,336,806.62x = 47,975,774,256,954,432 - Step 5: Solve for x
x = 47,975,774,256,954,432/251,336,806.62 - Step 6: Final answer
x = 190,882,405.57
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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.