Finding the Fourth Proportional to 518,503.68, 777,767.76 and 139,425.12
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Solution
The fourth proportional to 518,503.68, 777,767.76 and 139,425.12 is: 209,140.97
Step by Step Solution
- Step 1: Write the proportion equation
518,503.68 : 777,767.76 = 139,425.12 : x - Step 2: Convert to fraction form
518,503.68/777,767.76 = 139,425.12/x - Step 3: Cross multiply
518,503.68x = 777,767.76 × 139,425.12 - Step 4: Simplify right side
518,503.68x = 108,440,363,270.13 - Step 5: Solve for x
x = 108,440,363,270.13/518,503.68 - Step 6: Final answer
x = 209,140.97
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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.