Finding the Fourth Proportional to 387,959.76, 535,384.35 and 218,193.75
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Solution
The fourth proportional to 387,959.76, 535,384.35 and 218,193.75 is: 301,107.31
Step by Step Solution
- Step 1: Write the proportion equation
387,959.76 : 535,384.35 = 218,193.75 : x - Step 2: Convert to fraction form
387,959.76/535,384.35 = 218,193.75/x - Step 3: Cross multiply
387,959.76x = 535,384.35 × 218,193.75 - Step 4: Simplify right side
387,959.76x = 116,817,519,017.81 - Step 5: Solve for x
x = 116,817,519,017.81/387,959.76 - Step 6: Final answer
x = 301,107.31
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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.