Finding the Fourth Proportional to 318,052.05, 438,904.34 and 172,854.39
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Solution
The fourth proportional to 318,052.05, 438,904.34 and 172,854.39 is: 238,534.99
Step by Step Solution
- Step 1: Write the proportion equation
318,052.05 : 438,904.34 = 172,854.39 : x - Step 2: Convert to fraction form
318,052.05/438,904.34 = 172,854.39/x - Step 3: Cross multiply
318,052.05x = 438,904.34 × 172,854.39 - Step 4: Simplify right side
318,052.05x = 75,866,541,094.78 - Step 5: Solve for x
x = 75,866,541,094.78/318,052.05 - Step 6: Final answer
x = 238,534.99
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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.