Finding the Fourth Proportional to 357,366,831.44, 493,178,203.94 and 198,603,646.21
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Solution
The fourth proportional to 357,366,831.44, 493,178,203.94 and 198,603,646.21 is: 274,079,687.64
Step by Step Solution
- Step 1: Write the proportion equation
357,366,831.44 : 493,178,203.94 = 198,603,646.21 : x - Step 2: Convert to fraction form
357,366,831.44/493,178,203.94 = 198,603,646.21/x - Step 3: Cross multiply
357,366,831.44x = 493,178,203.94 × 198,603,646.21 - Step 4: Simplify right side
357,366,831.44x = 97,946,989,533,406,448 - Step 5: Solve for x
x = 97,946,989,533,406,448/357,366,831.44 - Step 6: Final answer
x = 274,079,687.64
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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.