Finding the Fourth Proportional to 420,533.21, 580,330.73 and 239,244.72
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Solution
The fourth proportional to 420,533.21, 580,330.73 and 239,244.72 is: 330,154.81
Step by Step Solution
- Step 1: Write the proportion equation
420,533.21 : 580,330.73 = 239,244.72 : x - Step 2: Convert to fraction form
420,533.21/580,330.73 = 239,244.72/x - Step 3: Cross multiply
420,533.21x = 580,330.73 × 239,244.72 - Step 4: Simplify right side
420,533.21x = 138,841,061,810.02 - Step 5: Solve for x
x = 138,841,061,810.02/420,533.21 - Step 6: Final answer
x = 330,154.81
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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.