Finding the Fourth Proportional to 312,181.62, 430,810.64 and 168,941.70
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Solution
The fourth proportional to 312,181.62, 430,810.64 and 168,941.70 is: 233,139.55
Step by Step Solution
- Step 1: Write the proportion equation
312,181.62 : 430,810.64 = 168,941.70 : x - Step 2: Convert to fraction form
312,181.62/430,810.64 = 168,941.70/x - Step 3: Cross multiply
312,181.62x = 430,810.64 × 168,941.70 - Step 4: Simplify right side
312,181.62x = 72,781,881,899.69 - Step 5: Solve for x
x = 72,781,881,899.69/312,181.62 - Step 6: Final answer
x = 233,139.55
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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.