Finding the Fourth Proportional to 249,142.32, 343,816.30 and 135,965.07
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Solution
The fourth proportional to 249,142.32, 343,816.30 and 135,965.07 is: 187,631.74
Step by Step Solution
- Step 1: Write the proportion equation
249,142.32 : 343,816.30 = 135,965.07 : x - Step 2: Convert to fraction form
249,142.32/343,816.30 = 135,965.07/x - Step 3: Cross multiply
249,142.32x = 343,816.30 × 135,965.07 - Step 4: Simplify right side
249,142.32x = 46,747,004,897.73 - Step 5: Solve for x
x = 46,747,004,897.73/249,142.32 - Step 6: Final answer
x = 187,631.74
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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.