Finding the Fourth Proportional to 257,801.82, 386,652.60 and 129,683.94
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Solution
The fourth proportional to 257,801.82, 386,652.60 and 129,683.94 is: 194,500.69
Step by Step Solution
- Step 1: Write the proportion equation
257,801.82 : 386,652.60 = 129,683.94 : x - Step 2: Convert to fraction form
257,801.82/386,652.60 = 129,683.94/x - Step 3: Cross multiply
257,801.82x = 386,652.60 × 129,683.94 - Step 4: Simplify right side
257,801.82x = 50,142,632,579.24 - Step 5: Solve for x
x = 50,142,632,579.24/257,801.82 - Step 6: Final answer
x = 194,500.69
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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.