Finding the Fourth Proportional to 312,491.17, 431,246.63 and 176,530.84
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Solution
The fourth proportional to 312,491.17, 431,246.63 and 176,530.84 is: 243,617.55
Step by Step Solution
- Step 1: Write the proportion equation
312,491.17 : 431,246.63 = 176,530.84 : x - Step 2: Convert to fraction form
312,491.17/431,246.63 = 176,530.84/x - Step 3: Cross multiply
312,491.17x = 431,246.63 × 176,530.84 - Step 4: Simplify right side
312,491.17x = 76,128,331,630.04 - Step 5: Solve for x
x = 76,128,331,630.04/312,491.17 - Step 6: Final answer
x = 243,617.55
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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.