Finding the Fourth Proportional to 386,653,505.76, 533,593,556.28 and 210,454,242.12
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Solution
The fourth proportional to 386,653,505.76, 533,593,556.28 and 210,454,242.12 is: 290,433,232.38
Step by Step Solution
- Step 1: Write the proportion equation
386,653,505.76 : 533,593,556.28 = 210,454,242.12 : x - Step 2: Convert to fraction form
386,653,505.76/533,593,556.28 = 210,454,242.12/x - Step 3: Cross multiply
386,653,505.76x = 533,593,556.28 × 210,454,242.12 - Step 4: Simplify right side
386,653,505.76x = 112,297,027,487,022,960 - Step 5: Solve for x
x = 112,297,027,487,022,960/386,653,505.76 - Step 6: Final answer
x = 290,433,232.38
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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.