Finding the Fourth Proportional to 312,257.76, 430,924.08 and 189,708.42
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Solution
The fourth proportional to 312,257.76, 430,924.08 and 189,708.42 is: 261,802.71
Step by Step Solution
- Step 1: Write the proportion equation
312,257.76 : 430,924.08 = 189,708.42 : x - Step 2: Convert to fraction form
312,257.76/430,924.08 = 189,708.42/x - Step 3: Cross multiply
312,257.76x = 430,924.08 × 189,708.42 - Step 4: Simplify right side
312,257.76x = 81,749,926,356.75 - Step 5: Solve for x
x = 81,749,926,356.75/312,257.76 - Step 6: Final answer
x = 261,802.71
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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.