Finding the Fourth Proportional to 283,177.02, 390,787.06 and 155,855.54
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Solution
The fourth proportional to 283,177.02, 390,787.06 and 155,855.54 is: 215,082.17
Step by Step Solution
- Step 1: Write the proportion equation
283,177.02 : 390,787.06 = 155,855.54 : x - Step 2: Convert to fraction form
283,177.02/390,787.06 = 155,855.54/x - Step 3: Cross multiply
283,177.02x = 390,787.06 × 155,855.54 - Step 4: Simplify right side
283,177.02x = 60,906,328,261.31 - Step 5: Solve for x
x = 60,906,328,261.31/283,177.02 - Step 6: Final answer
x = 215,082.17
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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.