Finding the Fourth Proportional to 438,075.70, 657,135.15 and 228,123.70
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Solution
The fourth proportional to 438,075.70, 657,135.15 and 228,123.70 is: 342,196.80
Step by Step Solution
- Step 1: Write the proportion equation
438,075.70 : 657,135.15 = 228,123.70 : x - Step 2: Convert to fraction form
438,075.70/657,135.15 = 228,123.70/x - Step 3: Cross multiply
438,075.70x = 657,135.15 × 228,123.70 - Step 4: Simplify right side
438,075.70x = 149,908,101,818.06 - Step 5: Solve for x
x = 149,908,101,818.06/438,075.70 - Step 6: Final answer
x = 342,196.80
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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.