Finding the Fourth Proportional to 426,342.42, 639,576.81 and 141,940.08
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Solution
The fourth proportional to 426,342.42, 639,576.81 and 141,940.08 is: 212,931.15
Step by Step Solution
- Step 1: Write the proportion equation
426,342.42 : 639,576.81 = 141,940.08 : x - Step 2: Convert to fraction form
426,342.42/639,576.81 = 141,940.08/x - Step 3: Cross multiply
426,342.42x = 639,576.81 × 141,940.08 - Step 4: Simplify right side
426,342.42x = 90,781,583,577.54 - Step 5: Solve for x
x = 90,781,583,577.54/426,342.42 - Step 6: Final answer
x = 212,931.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.