Finding the Fourth Proportional to 496,278.15, 684,644.19 and 305,178.63
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Solution
The fourth proportional to 496,278.15, 684,644.19 and 305,178.63 is: 421,011.43
Step by Step Solution
- Step 1: Write the proportion equation
496,278.15 : 684,644.19 = 305,178.63 : x - Step 2: Convert to fraction form
496,278.15/684,644.19 = 305,178.63/x - Step 3: Cross multiply
496,278.15x = 684,644.19 × 305,178.63 - Step 4: Simplify right side
496,278.15x = 208,938,775,941.66 - Step 5: Solve for x
x = 208,938,775,941.66/496,278.15 - Step 6: Final answer
x = 421,011.43
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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.