Finding the Fourth Proportional to 245,725.20, 368,587.80 and 79,513.20
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Solution
The fourth proportional to 245,725.20, 368,587.80 and 79,513.20 is: 119,269.80
Step by Step Solution
- Step 1: Write the proportion equation
245,725.20 : 368,587.80 = 79,513.20 : x - Step 2: Convert to fraction form
245,725.20/368,587.80 = 79,513.20/x - Step 3: Cross multiply
245,725.20x = 368,587.80 × 79,513.20 - Step 4: Simplify right side
245,725.20x = 29,307,595,458.96 - Step 5: Solve for x
x = 29,307,595,458.96/245,725.20 - Step 6: Final answer
x = 119,269.80
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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.