Finding the Fourth Proportional to 257,618.40, 385,909.20 and 173,637.60
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Solution
The fourth proportional to 257,618.40, 385,909.20 and 173,637.60 is: 260,106.99
Step by Step Solution
- Step 1: Write the proportion equation
257,618.40 : 385,909.20 = 173,637.60 : x - Step 2: Convert to fraction form
257,618.40/385,909.20 = 173,637.60/x - Step 3: Cross multiply
257,618.40x = 385,909.20 × 173,637.60 - Step 4: Simplify right side
257,618.40x = 67,008,347,305.92 - Step 5: Solve for x
x = 67,008,347,305.92/257,618.40 - Step 6: Final answer
x = 260,106.99
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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.