Finding the Fourth Proportional to 257,527.80, 386,291.70 and 218,647.80
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Solution
The fourth proportional to 257,527.80, 386,291.70 and 218,647.80 is: 327,971.70
Step by Step Solution
- Step 1: Write the proportion equation
257,527.80 : 386,291.70 = 218,647.80 : x - Step 2: Convert to fraction form
257,527.80/386,291.70 = 218,647.80/x - Step 3: Cross multiply
257,527.80x = 386,291.70 × 218,647.80 - Step 4: Simplify right side
257,527.80x = 84,461,830,363.26 - Step 5: Solve for x
x = 84,461,830,363.26/257,527.80 - Step 6: Final answer
x = 327,971.70
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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.