Finding the Fourth Proportional to 387,371.95, 581,036.04 and 121,101.05
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Solution
The fourth proportional to 387,371.95, 581,036.04 and 121,101.05 is: 181,644.74
Step by Step Solution
- Step 1: Write the proportion equation
387,371.95 : 581,036.04 = 121,101.05 : x - Step 2: Convert to fraction form
387,371.95/581,036.04 = 121,101.05/x - Step 3: Cross multiply
387,371.95x = 581,036.04 × 121,101.05 - Step 4: Simplify right side
387,371.95x = 70,364,075,984.43 - Step 5: Solve for x
x = 70,364,075,984.43/387,371.95 - Step 6: Final answer
x = 181,644.74
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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.