Finding the Fourth Proportional to 397,604,491.68, 548,719,117.48 and 218,988,344.48
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Solution
The fourth proportional to 397,604,491.68, 548,719,117.48 and 218,988,344.48 is: 302,217,639.99
Step by Step Solution
- Step 1: Write the proportion equation
397,604,491.68 : 548,719,117.48 = 218,988,344.48 : x - Step 2: Convert to fraction form
397,604,491.68/548,719,117.48 = 218,988,344.48/x - Step 3: Cross multiply
397,604,491.68x = 548,719,117.48 × 218,988,344.48 - Step 4: Simplify right side
397,604,491.68x = 120,163,091,123,255,776 - Step 5: Solve for x
x = 120,163,091,123,255,776/397,604,491.68 - Step 6: Final answer
x = 302,217,639.99
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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.