Finding the Fourth Proportional to 219,456.46, 302,980.43 and 138,952.99
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Solution
The fourth proportional to 219,456.46, 302,980.43 and 138,952.99 is: 191,837.76
Step by Step Solution
- Step 1: Write the proportion equation
219,456.46 : 302,980.43 = 138,952.99 : x - Step 2: Convert to fraction form
219,456.46/302,980.43 = 138,952.99/x - Step 3: Cross multiply
219,456.46x = 302,980.43 × 138,952.99 - Step 4: Simplify right side
219,456.46x = 42,100,036,659.99 - Step 5: Solve for x
x = 42,100,036,659.99/219,456.46 - Step 6: Final answer
x = 191,837.76
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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.