Finding the Fourth Proportional to 292,489.65, 438,678.99 and 142,579.17
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Solution
The fourth proportional to 292,489.65, 438,678.99 and 142,579.17 is: 213,841.71
Step by Step Solution
- Step 1: Write the proportion equation
292,489.65 : 438,678.99 = 142,579.17 : x - Step 2: Convert to fraction form
292,489.65/438,678.99 = 142,579.17/x - Step 3: Cross multiply
292,489.65x = 438,678.99 × 142,579.17 - Step 4: Simplify right side
292,489.65x = 62,546,486,290.64 - Step 5: Solve for x
x = 62,546,486,290.64/292,489.65 - Step 6: Final answer
x = 213,841.71
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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.