Finding the Fourth Proportional to 292,831.76, 438,945.96 and 115,266.80
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Solution
The fourth proportional to 292,831.76, 438,945.96 and 115,266.80 is: 172,781.45
Step by Step Solution
- Step 1: Write the proportion equation
292,831.76 : 438,945.96 = 115,266.80 : x - Step 2: Convert to fraction form
292,831.76/438,945.96 = 115,266.80/x - Step 3: Cross multiply
292,831.76x = 438,945.96 × 115,266.80 - Step 4: Simplify right side
292,831.76x = 50,595,896,182.13 - Step 5: Solve for x
x = 50,595,896,182.13/292,831.76 - Step 6: Final answer
x = 172,781.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.