Finding the Fourth Proportional to 415,959.20, 623,938.80 and 135,476.45
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Solution
The fourth proportional to 415,959.20, 623,938.80 and 135,476.45 is: 203,214.68
Step by Step Solution
- Step 1: Write the proportion equation
415,959.20 : 623,938.80 = 135,476.45 : x - Step 2: Convert to fraction form
415,959.20/623,938.80 = 135,476.45/x - Step 3: Cross multiply
415,959.20x = 623,938.80 × 135,476.45 - Step 4: Simplify right side
415,959.20x = 84,529,013,641.26 - Step 5: Solve for x
x = 84,529,013,641.26/415,959.20 - Step 6: Final answer
x = 203,214.68
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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.