Finding the Fourth Proportional to 239,720.81, 330,822.65 and 130,831.09
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Solution
The fourth proportional to 239,720.81, 330,822.65 and 130,831.09 is: 180,551.23
Step by Step Solution
- Step 1: Write the proportion equation
239,720.81 : 330,822.65 = 130,831.09 : x - Step 2: Convert to fraction form
239,720.81/330,822.65 = 130,831.09/x - Step 3: Cross multiply
239,720.81x = 330,822.65 × 130,831.09 - Step 4: Simplify right side
239,720.81x = 43,281,887,396.21 - Step 5: Solve for x
x = 43,281,887,396.21/239,720.81 - Step 6: Final answer
x = 180,551.23
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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.