Finding the Fourth Proportional to 387,652.48, 581,478.72 and 121,415.20
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Solution
The fourth proportional to 387,652.48, 581,478.72 and 121,415.20 is: 182,122.80
Step by Step Solution
- Step 1: Write the proportion equation
387,652.48 : 581,478.72 = 121,415.20 : x - Step 2: Convert to fraction form
387,652.48/581,478.72 = 121,415.20/x - Step 3: Cross multiply
387,652.48x = 581,478.72 × 121,415.20 - Step 4: Simplify right side
387,652.48x = 70,600,355,084.54 - Step 5: Solve for x
x = 70,600,355,084.54/387,652.48 - Step 6: Final answer
x = 182,122.80
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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.