Finding the Fourth Proportional to 312,312.72, 430,988.52 and 169,069.08
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Solution
The fourth proportional to 312,312.72, 430,988.52 and 169,069.08 is: 233,313.69
Step by Step Solution
- Step 1: Write the proportion equation
312,312.72 : 430,988.52 = 169,069.08 : x - Step 2: Convert to fraction form
312,312.72/430,988.52 = 169,069.08/x - Step 3: Cross multiply
312,312.72x = 430,988.52 × 169,069.08 - Step 4: Simplify right side
312,312.72x = 72,866,832,566.96 - Step 5: Solve for x
x = 72,866,832,566.96/312,312.72 - Step 6: Final answer
x = 233,313.69
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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.