Finding the Fourth Proportional to 292,815.54, 403,929.18 and 178,129.26
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Solution
The fourth proportional to 292,815.54, 403,929.18 and 178,129.26 is: 245,723.32
Step by Step Solution
- Step 1: Write the proportion equation
292,815.54 : 403,929.18 = 178,129.26 : x - Step 2: Convert to fraction form
292,815.54/403,929.18 = 178,129.26/x - Step 3: Cross multiply
292,815.54x = 403,929.18 × 178,129.26 - Step 4: Simplify right side
292,815.54x = 71,951,605,925.81 - Step 5: Solve for x
x = 71,951,605,925.81/292,815.54 - Step 6: Final answer
x = 245,723.32
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1.5x scale
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.