Finding the Fourth Proportional to 389,831.69, 537,961.92 and 217,752.05
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Solution
The fourth proportional to 389,831.69, 537,961.92 and 217,752.05 is: 300,494.58
Step by Step Solution
- Step 1: Write the proportion equation
389,831.69 : 537,961.92 = 217,752.05 : x - Step 2: Convert to fraction form
389,831.69/537,961.92 = 217,752.05/x - Step 3: Cross multiply
389,831.69x = 537,961.92 × 217,752.05 - Step 4: Simplify right side
389,831.69x = 117,142,310,901.94 - Step 5: Solve for x
x = 117,142,310,901.94/389,831.69 - Step 6: Final answer
x = 300,494.58
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.