Finding the Fourth Proportional to 312,235.71, 430,885.74 and 168,995.71
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Solution
The fourth proportional to 312,235.71, 430,885.74 and 168,995.71 is: 233,214.33
Step by Step Solution
- Step 1: Write the proportion equation
312,235.71 : 430,885.74 = 168,995.71 : x - Step 2: Convert to fraction form
312,235.71/430,885.74 = 168,995.71/x - Step 3: Cross multiply
312,235.71x = 430,885.74 × 168,995.71 - Step 4: Simplify right side
312,235.71x = 72,817,841,560.18 - Step 5: Solve for x
x = 72,817,841,560.18/312,235.71 - Step 6: Final answer
x = 233,214.33
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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.