Finding the Fourth Proportional to 382,831.53, 528,337.98 and 221,689.38
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Solution
The fourth proportional to 382,831.53, 528,337.98 and 221,689.38 is: 305,948.99
Step by Step Solution
- Step 1: Write the proportion equation
382,831.53 : 528,337.98 = 221,689.38 : x - Step 2: Convert to fraction form
382,831.53/528,337.98 = 221,689.38/x - Step 3: Cross multiply
382,831.53x = 528,337.98 × 221,689.38 - Step 4: Simplify right side
382,831.53x = 117,126,919,216.65 - Step 5: Solve for x
x = 117,126,919,216.65/382,831.53 - Step 6: Final answer
x = 305,948.99
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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.