Finding the Fourth Proportional to 438,085.80, 657,128.70 and 228,133.80
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Solution
The fourth proportional to 438,085.80, 657,128.70 and 228,133.80 is: 342,200.70
Step by Step Solution
- Step 1: Write the proportion equation
438,085.80 : 657,128.70 = 228,133.80 : x - Step 2: Convert to fraction form
438,085.80/657,128.70 = 228,133.80/x - Step 3: Cross multiply
438,085.80x = 657,128.70 × 228,133.80 - Step 4: Simplify right side
438,085.80x = 149,913,267,420.06 - Step 5: Solve for x
x = 149,913,267,420.06/438,085.80 - Step 6: Final answer
x = 342,200.70
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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.