Finding the Fourth Proportional to 279,874.79, 385,921.98 and 189,073.09
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Solution
The fourth proportional to 279,874.79, 385,921.98 and 189,073.09 is: 260,714.66
Step by Step Solution
- Step 1: Write the proportion equation
279,874.79 : 385,921.98 = 189,073.09 : x - Step 2: Convert to fraction form
279,874.79/385,921.98 = 189,073.09/x - Step 3: Cross multiply
279,874.79x = 385,921.98 × 189,073.09 - Step 4: Simplify right side
279,874.79x = 72,967,460,292.71 - Step 5: Solve for x
x = 72,967,460,292.71/279,874.79 - Step 6: Final answer
x = 260,714.66
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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.