Finding the Fourth Proportional to 257,427.80, 386,141.70 and 218,547.80
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Solution
The fourth proportional to 257,427.80, 386,141.70 and 218,547.80 is: 327,821.70
Step by Step Solution
- Step 1: Write the proportion equation
257,427.80 : 386,141.70 = 218,547.80 : x - Step 2: Convert to fraction form
257,427.80/386,141.70 = 218,547.80/x - Step 3: Cross multiply
257,427.80x = 386,141.70 × 218,547.80 - Step 4: Simplify right side
257,427.80x = 84,390,419,023.26 - Step 5: Solve for x
x = 84,390,419,023.26/257,427.80 - Step 6: Final answer
x = 327,821.70
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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.