Finding the Fourth Proportional to 413,691.81, 620,384.45 and 147,381.63
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Solution
The fourth proportional to 413,691.81, 620,384.45 and 147,381.63 is: 221,017.84
Step by Step Solution
- Step 1: Write the proportion equation
413,691.81 : 620,384.45 = 147,381.63 : x - Step 2: Convert to fraction form
413,691.81/620,384.45 = 147,381.63/x - Step 3: Cross multiply
413,691.81x = 620,384.45 × 147,381.63 - Step 4: Simplify right side
413,691.81x = 91,433,270,730.75 - Step 5: Solve for x
x = 91,433,270,730.75/413,691.81 - Step 6: Final answer
x = 221,017.84
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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.