Finding the Fourth Proportional to 279,961.08, 386,350.47 and 152,638.80
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Solution
The fourth proportional to 279,961.08, 386,350.47 and 152,638.80 is: 210,643.82
Step by Step Solution
- Step 1: Write the proportion equation
279,961.08 : 386,350.47 = 152,638.80 : x - Step 2: Convert to fraction form
279,961.08/386,350.47 = 152,638.80/x - Step 3: Cross multiply
279,961.08x = 386,350.47 × 152,638.80 - Step 4: Simplify right side
279,961.08x = 58,972,072,120.24 - Step 5: Solve for x
x = 58,972,072,120.24/279,961.08 - Step 6: Final answer
x = 210,643.82
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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.