Finding the Fourth Proportional to 282,692.28, 390,116.61 and 155,376.08
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Solution
The fourth proportional to 282,692.28, 390,116.61 and 155,376.08 is: 214,419.68
Step by Step Solution
- Step 1: Write the proportion equation
282,692.28 : 390,116.61 = 155,376.08 : x - Step 2: Convert to fraction form
282,692.28/390,116.61 = 155,376.08/x - Step 3: Cross multiply
282,692.28x = 390,116.61 × 155,376.08 - Step 4: Simplify right side
282,692.28x = 60,614,787,654.11 - Step 5: Solve for x
x = 60,614,787,654.11/282,692.28 - Step 6: Final answer
x = 214,419.68
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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.