Finding the Fourth Proportional to 210,331,770.12, 290,257,965.72 and 117,512,277.84
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Solution
The fourth proportional to 210,331,770.12, 290,257,965.72 and 117,512,277.84 is: 162,167,012.11
Step by Step Solution
- Step 1: Write the proportion equation
210,331,770.12 : 290,257,965.72 = 117,512,277.84 : x - Step 2: Convert to fraction form
210,331,770.12/290,257,965.72 = 117,512,277.84/x - Step 3: Cross multiply
210,331,770.12x = 290,257,965.72 × 117,512,277.84 - Step 4: Simplify right side
210,331,770.12x = 34,108,874,712,961,840 - Step 5: Solve for x
x = 34,108,874,712,961,840/210,331,770.12 - Step 6: Final answer
x = 162,167,012.11
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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.