Finding the Fourth Proportional to 210,511.70, 290,420.12 and 155,452.94
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Solution
The fourth proportional to 210,511.70, 290,420.12 and 155,452.94 is: 214,461.53
Step by Step Solution
- Step 1: Write the proportion equation
210,511.70 : 290,420.12 = 155,452.94 : x - Step 2: Convert to fraction form
210,511.70/290,420.12 = 155,452.94/x - Step 3: Cross multiply
210,511.70x = 290,420.12 × 155,452.94 - Step 4: Simplify right side
210,511.70x = 45,146,659,259.79 - Step 5: Solve for x
x = 45,146,659,259.79/210,511.70 - Step 6: Final answer
x = 214,461.53
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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.