Finding the Fourth Proportional to 420,036.19, 579,627.11 and 238,722.95
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Solution
The fourth proportional to 420,036.19, 579,627.11 and 238,722.95 is: 329,424.70
Step by Step Solution
- Step 1: Write the proportion equation
420,036.19 : 579,627.11 = 238,722.95 : x - Step 2: Convert to fraction form
420,036.19/579,627.11 = 238,722.95/x - Step 3: Cross multiply
420,036.19x = 579,627.11 × 238,722.95 - Step 4: Simplify right side
420,036.19x = 138,370,295,645.05 - Step 5: Solve for x
x = 138,370,295,645.05/420,036.19 - Step 6: Final answer
x = 329,424.70
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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.