Finding the Fourth Proportional to 313,278,314.58, 432,331,274.61 and 172,158,308.70
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Solution
The fourth proportional to 313,278,314.58, 432,331,274.61 and 172,158,308.70 is: 237,582,422.95
Step by Step Solution
- Step 1: Write the proportion equation
313,278,314.58 : 432,331,274.61 = 172,158,308.70 : x - Step 2: Convert to fraction form
313,278,314.58/432,331,274.61 = 172,158,308.70/x - Step 3: Cross multiply
313,278,314.58x = 432,331,274.61 × 172,158,308.70 - Step 4: Simplify right side
313,278,314.58x = 74,429,421,034,972,848 - Step 5: Solve for x
x = 74,429,421,034,972,848/313,278,314.58 - Step 6: Final answer
x = 237,582,422.95
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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.