Finding the Fourth Proportional to 221,139.54, 304,931.40 and 149,394.99
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Solution
The fourth proportional to 221,139.54, 304,931.40 and 149,394.99 is: 206,002.16
Step by Step Solution
- Step 1: Write the proportion equation
221,139.54 : 304,931.40 = 149,394.99 : x - Step 2: Convert to fraction form
221,139.54/304,931.40 = 149,394.99/x - Step 3: Cross multiply
221,139.54x = 304,931.40 × 149,394.99 - Step 4: Simplify right side
221,139.54x = 45,555,223,453.69 - Step 5: Solve for x
x = 45,555,223,453.69/221,139.54 - Step 6: Final answer
x = 206,002.16
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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.