Finding the Fourth Proportional to 212,394.80, 292,977.96 and 135,930.80
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Solution
The fourth proportional to 212,394.80, 292,977.96 and 135,930.80 is: 187,503.31
Step by Step Solution
- Step 1: Write the proportion equation
212,394.80 : 292,977.96 = 135,930.80 : x - Step 2: Convert to fraction form
212,394.80/292,977.96 = 135,930.80/x - Step 3: Cross multiply
212,394.80x = 292,977.96 × 135,930.80 - Step 4: Simplify right side
212,394.80x = 39,824,728,485.17 - Step 5: Solve for x
x = 39,824,728,485.17/212,394.80 - Step 6: Final answer
x = 187,503.31
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1.5x scale
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.