Finding the Fourth Proportional to 239,355.81, 330,308.28 and 135,989.28
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Solution
The fourth proportional to 239,355.81, 330,308.28 and 135,989.28 is: 187,663.65
Step by Step Solution
- Step 1: Write the proportion equation
239,355.81 : 330,308.28 = 135,989.28 : x - Step 2: Convert to fraction form
239,355.81/330,308.28 = 135,989.28/x - Step 3: Cross multiply
239,355.81x = 330,308.28 × 135,989.28 - Step 4: Simplify right side
239,355.81x = 44,918,385,175.24 - Step 5: Solve for x
x = 44,918,385,175.24/239,355.81 - Step 6: Final answer
x = 187,663.65
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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.