Finding the Fourth Proportional to 257,831.95, 386,352.34 and 107,990.26
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Solution
The fourth proportional to 257,831.95, 386,352.34 and 107,990.26 is: 161,819.70
Step by Step Solution
- Step 1: Write the proportion equation
257,831.95 : 386,352.34 = 107,990.26 : x - Step 2: Convert to fraction form
257,831.95/386,352.34 = 107,990.26/x - Step 3: Cross multiply
257,831.95x = 386,352.34 × 107,990.26 - Step 4: Simplify right side
257,831.95x = 41,722,289,648.21 - Step 5: Solve for x
x = 41,722,289,648.21/257,831.95 - Step 6: Final answer
x = 161,819.70
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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.