Finding the Fourth Proportional to 382,938.88, 528,417.40 and 221,845.76
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Solution
The fourth proportional to 382,938.88, 528,417.40 and 221,845.76 is: 306,124.99
Step by Step Solution
- Step 1: Write the proportion equation
382,938.88 : 528,417.40 = 221,845.76 : x - Step 2: Convert to fraction form
382,938.88/528,417.40 = 221,845.76/x - Step 3: Cross multiply
382,938.88x = 528,417.40 × 221,845.76 - Step 4: Simplify right side
382,938.88x = 117,227,159,700.22 - Step 5: Solve for x
x = 117,227,159,700.22/382,938.88 - Step 6: Final answer
x = 306,124.99
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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.