Finding the Fourth Proportional to 312,130.76, 430,739.94 and 176,193.32
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Solution
The fourth proportional to 312,130.76, 430,739.94 and 176,193.32 is: 243,146.49
Step by Step Solution
- Step 1: Write the proportion equation
312,130.76 : 430,739.94 = 176,193.32 : x - Step 2: Convert to fraction form
312,130.76/430,739.94 = 176,193.32/x - Step 3: Cross multiply
312,130.76x = 430,739.94 × 176,193.32 - Step 4: Simplify right side
312,130.76x = 75,893,500,085.20 - Step 5: Solve for x
x = 75,893,500,085.20/312,130.76 - Step 6: Final answer
x = 243,146.49
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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.