Finding the Fourth Proportional to 387,620.49, 581,430.74 and 121,401.84
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Solution
The fourth proportional to 387,620.49, 581,430.74 and 121,401.84 is: 182,102.76
Step by Step Solution
- Step 1: Write the proportion equation
387,620.49 : 581,430.74 = 121,401.84 : x - Step 2: Convert to fraction form
387,620.49/581,430.74 = 121,401.84/x - Step 3: Cross multiply
387,620.49x = 581,430.74 × 121,401.84 - Step 4: Simplify right side
387,620.49x = 70,586,758,881.19 - Step 5: Solve for x
x = 70,586,758,881.19/387,620.49 - Step 6: Final answer
x = 182,102.76
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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.