Finding the Fourth Proportional to 306,731.60, 423,279.24 and 172,569.68
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Solution
The fourth proportional to 306,731.60, 423,279.24 and 172,569.68 is: 238,140.33
Step by Step Solution
- Step 1: Write the proportion equation
306,731.60 : 423,279.24 = 172,569.68 : x - Step 2: Convert to fraction form
306,731.60/423,279.24 = 172,569.68/x - Step 3: Cross multiply
306,731.60x = 423,279.24 × 172,569.68 - Step 4: Simplify right side
306,731.60x = 73,045,162,997.44 - Step 5: Solve for x
x = 73,045,162,997.44/306,731.60 - Step 6: Final answer
x = 238,140.33
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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.