Finding the Fourth Proportional to 278,776.68, 384,684.06 and 157,893.84
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Solution
The fourth proportional to 278,776.68, 384,684.06 and 157,893.84 is: 217,877.78
Step by Step Solution
- Step 1: Write the proportion equation
278,776.68 : 384,684.06 = 157,893.84 : x - Step 2: Convert to fraction form
278,776.68/384,684.06 = 157,893.84/x - Step 3: Cross multiply
278,776.68x = 384,684.06 × 157,893.84 - Step 4: Simplify right side
278,776.68x = 60,739,243,420.19 - Step 5: Solve for x
x = 60,739,243,420.19/278,776.68 - Step 6: Final answer
x = 217,877.78
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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.