Finding the Fourth Proportional to 250,318.14, 345,434.40 and 137,140.08
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Solution
The fourth proportional to 250,318.14, 345,434.40 and 137,140.08 is: 189,250.77
Step by Step Solution
- Step 1: Write the proportion equation
250,318.14 : 345,434.40 = 137,140.08 : x - Step 2: Convert to fraction form
250,318.14/345,434.40 = 137,140.08/x - Step 3: Cross multiply
250,318.14x = 345,434.40 × 137,140.08 - Step 4: Simplify right side
250,318.14x = 47,372,901,250.75 - Step 5: Solve for x
x = 47,372,901,250.75/250,318.14 - Step 6: Final answer
x = 189,250.77
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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.