Finding the Fourth Proportional to 252,658.36, 348,659.40 and 139,478.68
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Solution
The fourth proportional to 252,658.36, 348,659.40 and 139,478.68 is: 192,475.53
Step by Step Solution
- Step 1: Write the proportion equation
252,658.36 : 348,659.40 = 139,478.68 : x - Step 2: Convert to fraction form
252,658.36/348,659.40 = 139,478.68/x - Step 3: Cross multiply
252,658.36x = 348,659.40 × 139,478.68 - Step 4: Simplify right side
252,658.36x = 48,630,552,881.59 - Step 5: Solve for x
x = 48,630,552,881.59/252,658.36 - Step 6: Final answer
x = 192,475.53
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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.