Finding the Fourth Proportional to 328,519.17, 492,831.99 and 128,731.23
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Solution
The fourth proportional to 328,519.17, 492,831.99 and 128,731.23 is: 193,117.71
Step by Step Solution
- Step 1: Write the proportion equation
328,519.17 : 492,831.99 = 128,731.23 : x - Step 2: Convert to fraction form
328,519.17/492,831.99 = 128,731.23/x - Step 3: Cross multiply
328,519.17x = 492,831.99 × 128,731.23 - Step 4: Simplify right side
328,519.17x = 63,442,868,256.05 - Step 5: Solve for x
x = 63,442,868,256.05/328,519.17 - Step 6: Final answer
x = 193,117.71
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.