Finding the Fourth Proportional to 228,679.20, 315,577.44 and 125,312.94
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Solution
The fourth proportional to 228,679.20, 315,577.44 and 125,312.94 is: 172,931.94
Step by Step Solution
- Step 1: Write the proportion equation
228,679.20 : 315,577.44 = 125,312.94 : x - Step 2: Convert to fraction form
228,679.20/315,577.44 = 125,312.94/x - Step 3: Cross multiply
228,679.20x = 315,577.44 × 125,312.94 - Step 4: Simplify right side
228,679.20x = 39,545,936,804.07 - Step 5: Solve for x
x = 39,545,936,804.07/228,679.20 - Step 6: Final answer
x = 172,931.94
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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.