Finding the Fourth Proportional to 353,138.80, 528,930.60 and 313,740.40
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Solution
The fourth proportional to 353,138.80, 528,930.60 and 313,740.40 is: 469,919.75
Step by Step Solution
- Step 1: Write the proportion equation
353,138.80 : 528,930.60 = 313,740.40 : x - Step 2: Convert to fraction form
353,138.80/528,930.60 = 313,740.40/x - Step 3: Cross multiply
353,138.80x = 528,930.60 × 313,740.40 - Step 4: Simplify right side
353,138.80x = 165,946,898,016.24 - Step 5: Solve for x
x = 165,946,898,016.24/353,138.80 - Step 6: Final answer
x = 469,919.75
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.