Finding the Fourth Proportional to 289,000.11, 398,687.08 and 187,058.31
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Solution
The fourth proportional to 289,000.11, 398,687.08 and 187,058.31 is: 258,054.34
Step by Step Solution
- Step 1: Write the proportion equation
289,000.11 : 398,687.08 = 187,058.31 : x - Step 2: Convert to fraction form
289,000.11/398,687.08 = 187,058.31/x - Step 3: Cross multiply
289,000.11x = 398,687.08 × 187,058.31 - Step 4: Simplify right side
289,000.11x = 74,577,731,403.63 - Step 5: Solve for x
x = 74,577,731,403.63/289,000.11 - Step 6: Final answer
x = 258,054.34
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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.