Finding the Fourth Proportional to 212,829.93, 319,277.70 and 72,555.75
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Solution
The fourth proportional to 212,829.93, 319,277.70 and 72,555.75 is: 108,844.81
Step by Step Solution
- Step 1: Write the proportion equation
212,829.93 : 319,277.70 = 72,555.75 : x - Step 2: Convert to fraction form
212,829.93/319,277.70 = 72,555.75/x - Step 3: Cross multiply
212,829.93x = 319,277.70 × 72,555.75 - Step 4: Simplify right side
212,829.93x = 23,165,432,981.78 - Step 5: Solve for x
x = 23,165,432,981.78/212,829.93 - Step 6: Final answer
x = 108,844.81
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1.5x scale
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.