Finding the Fourth Proportional to 315,299.97, 435,123.18 and 172,069.20
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Solution
The fourth proportional to 315,299.97, 435,123.18 and 172,069.20 is: 237,460.53
Step by Step Solution
- Step 1: Write the proportion equation
315,299.97 : 435,123.18 = 172,069.20 : x - Step 2: Convert to fraction form
315,299.97/435,123.18 = 172,069.20/x - Step 3: Cross multiply
315,299.97x = 435,123.18 × 172,069.20 - Step 4: Simplify right side
315,299.97x = 74,871,297,484.06 - Step 5: Solve for x
x = 74,871,297,484.06/315,299.97 - Step 6: Final answer
x = 237,460.53
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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.