Finding the Fourth Proportional to 318,013.68, 438,869.40 and 174,778.80
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Solution
The fourth proportional to 318,013.68, 438,869.40 and 174,778.80 is: 241,200.53
Step by Step Solution
- Step 1: Write the proportion equation
318,013.68 : 438,869.40 = 174,778.80 : x - Step 2: Convert to fraction form
318,013.68/438,869.40 = 174,778.80/x - Step 3: Cross multiply
318,013.68x = 438,869.40 × 174,778.80 - Step 4: Simplify right side
318,013.68x = 76,705,067,088.72 - Step 5: Solve for x
x = 76,705,067,088.72/318,013.68 - Step 6: Final answer
x = 241,200.53
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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.