Finding the Fourth Proportional to 283,254.84, 390,876.84 and 155,905.56
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Solution
The fourth proportional to 283,254.84, 390,876.84 and 155,905.56 is: 215,141.51
Step by Step Solution
- Step 1: Write the proportion equation
283,254.84 : 390,876.84 = 155,905.56 : x - Step 2: Convert to fraction form
283,254.84/390,876.84 = 155,905.56/x - Step 3: Cross multiply
283,254.84x = 390,876.84 × 155,905.56 - Step 4: Simplify right side
283,254.84x = 60,939,872,631.23 - Step 5: Solve for x
x = 60,939,872,631.23/283,254.84 - Step 6: Final answer
x = 215,141.51
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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.