Finding the Fourth Proportional to 387,009.45, 580,738.14 and 162,349.74
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Solution
The fourth proportional to 387,009.45, 580,738.14 and 162,349.74 is: 243,618.56
Step by Step Solution
- Step 1: Write the proportion equation
387,009.45 : 580,738.14 = 162,349.74 : x - Step 2: Convert to fraction form
387,009.45/580,738.14 = 162,349.74/x - Step 3: Cross multiply
387,009.45x = 580,738.14 × 162,349.74 - Step 4: Simplify right side
387,009.45x = 94,282,686,037.08 - Step 5: Solve for x
x = 94,282,686,037.08/387,009.45 - Step 6: Final answer
x = 243,618.56
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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.