Finding the Fourth Proportional to 231,000.14, 318,776.81 and 129,027.08
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Solution
The fourth proportional to 231,000.14, 318,776.81 and 129,027.08 is: 178,055.47
Step by Step Solution
- Step 1: Write the proportion equation
231,000.14 : 318,776.81 = 129,027.08 : x - Step 2: Convert to fraction form
231,000.14/318,776.81 = 129,027.08/x - Step 3: Cross multiply
231,000.14x = 318,776.81 × 129,027.08 - Step 4: Simplify right side
231,000.14x = 41,130,838,727.00 - Step 5: Solve for x
x = 41,130,838,727.00/231,000.14 - Step 6: Final answer
x = 178,055.47
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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.