Finding the Fourth Proportional to 387,982.74, 581,998.68 and 121,753.76
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Solution
The fourth proportional to 387,982.74, 581,998.68 and 121,753.76 is: 182,638.35
Step by Step Solution
- Step 1: Write the proportion equation
387,982.74 : 581,998.68 = 121,753.76 : x - Step 2: Convert to fraction form
387,982.74/581,998.68 = 121,753.76/x - Step 3: Cross multiply
387,982.74x = 581,998.68 × 121,753.76 - Step 4: Simplify right side
387,982.74x = 70,860,527,605.04 - Step 5: Solve for x
x = 70,860,527,605.04/387,982.74 - Step 6: Final answer
x = 182,638.35
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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.