Finding the Fourth Proportional to 418,986.61, 578,214.56 and 237,706.18
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Solution
The fourth proportional to 418,986.61, 578,214.56 and 237,706.18 is: 328,041.92
Step by Step Solution
- Step 1: Write the proportion equation
418,986.61 : 578,214.56 = 237,706.18 : x - Step 2: Convert to fraction form
418,986.61/578,214.56 = 237,706.18/x - Step 3: Cross multiply
418,986.61x = 578,214.56 × 237,706.18 - Step 4: Simplify right side
418,986.61x = 137,445,170,198.38 - Step 5: Solve for x
x = 137,445,170,198.38/418,986.61 - Step 6: Final answer
x = 328,041.92
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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.