Finding the Fourth Proportional to 420,924.16, 631,381.56 and 121,394.96
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Solution
The fourth proportional to 420,924.16, 631,381.56 and 121,394.96 is: 182,091.09
Step by Step Solution
- Step 1: Write the proportion equation
420,924.16 : 631,381.56 = 121,394.96 : x - Step 2: Convert to fraction form
420,924.16/631,381.56 = 121,394.96/x - Step 3: Cross multiply
420,924.16x = 631,381.56 × 121,394.96 - Step 4: Simplify right side
420,924.16x = 76,646,539,220.94 - Step 5: Solve for x
x = 76,646,539,220.94/420,924.16 - Step 6: Final answer
x = 182,091.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.