Finding the Fourth Proportional to 311,748,831.48, 430,214,224.14 and 172,529,193.72
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Solution
The fourth proportional to 311,748,831.48, 430,214,224.14 and 172,529,193.72 is: 238,090,750.38
Step by Step Solution
- Step 1: Write the proportion equation
311,748,831.48 : 430,214,224.14 = 172,529,193.72 : x - Step 2: Convert to fraction form
311,748,831.48/430,214,224.14 = 172,529,193.72/x - Step 3: Cross multiply
311,748,831.48x = 430,214,224.14 × 172,529,193.72 - Step 4: Simplify right side
311,748,831.48x = 74,224,513,217,749,552 - Step 5: Solve for x
x = 74,224,513,217,749,552/311,748,831.48 - Step 6: Final answer
x = 238,090,750.38
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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.