Finding the Fourth Proportional to 387,393.68, 534,599.49 and 215,312.02
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Solution
The fourth proportional to 387,393.68, 534,599.49 and 215,312.02 is: 297,128.48
Step by Step Solution
- Step 1: Write the proportion equation
387,393.68 : 534,599.49 = 215,312.02 : x - Step 2: Convert to fraction form
387,393.68/534,599.49 = 215,312.02/x - Step 3: Cross multiply
387,393.68x = 534,599.49 × 215,312.02 - Step 4: Simplify right side
387,393.68x = 115,105,696,082.87 - Step 5: Solve for x
x = 115,105,696,082.87/387,393.68 - Step 6: Final answer
x = 297,128.48
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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.