Finding the Fourth Proportional to 391,128.23, 540,000.74 and 268,831.19
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Solution
The fourth proportional to 391,128.23, 540,000.74 and 268,831.19 is: 371,154.60
Step by Step Solution
- Step 1: Write the proportion equation
391,128.23 : 540,000.74 = 268,831.19 : x - Step 2: Convert to fraction form
391,128.23/540,000.74 = 268,831.19/x - Step 3: Cross multiply
391,128.23x = 540,000.74 × 268,831.19 - Step 4: Simplify right side
391,128.23x = 145,169,041,535.08 - Step 5: Solve for x
x = 145,169,041,535.08/391,128.23 - Step 6: Final answer
x = 371,154.60
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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.