Finding the Fourth Proportional to 319,881.63, 441,138.78 and 212,346.84
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Solution
The fourth proportional to 319,881.63, 441,138.78 and 212,346.84 is: 292,840.90
Step by Step Solution
- Step 1: Write the proportion equation
319,881.63 : 441,138.78 = 212,346.84 : x - Step 2: Convert to fraction form
319,881.63/441,138.78 = 212,346.84/x - Step 3: Cross multiply
319,881.63x = 441,138.78 × 212,346.84 - Step 4: Simplify right side
319,881.63x = 93,674,425,934.46 - Step 5: Solve for x
x = 93,674,425,934.46/319,881.63 - Step 6: Final answer
x = 292,840.90
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1.5x scale
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.