Finding the Fourth Proportional to 370,921.20, 556,381.80 and 291,205.05
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Solution
The fourth proportional to 370,921.20, 556,381.80 and 291,205.05 is: 436,807.58
Step by Step Solution
- Step 1: Write the proportion equation
370,921.20 : 556,381.80 = 291,205.05 : x - Step 2: Convert to fraction form
370,921.20/556,381.80 = 291,205.05/x - Step 3: Cross multiply
370,921.20x = 556,381.80 × 291,205.05 - Step 4: Simplify right side
370,921.20x = 162,021,189,888.09 - Step 5: Solve for x
x = 162,021,189,888.09/370,921.20 - Step 6: Final answer
x = 436,807.58
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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.