Finding the Fourth Proportional to 421,008.84, 580,971.06 and 229,987.08
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Solution
The fourth proportional to 421,008.84, 580,971.06 and 229,987.08 is: 317,370.62
Step by Step Solution
- Step 1: Write the proportion equation
421,008.84 : 580,971.06 = 229,987.08 : x - Step 2: Convert to fraction form
421,008.84/580,971.06 = 229,987.08/x - Step 3: Cross multiply
421,008.84x = 580,971.06 × 229,987.08 - Step 4: Simplify right side
421,008.84x = 133,615,837,653.91 - Step 5: Solve for x
x = 133,615,837,653.91/421,008.84 - Step 6: Final answer
x = 317,370.62
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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.