Finding the Fourth Proportional to 228,409.86, 315,324.99 and 142,395.06
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Solution
The fourth proportional to 228,409.86, 315,324.99 and 142,395.06 is: 196,579.61
Step by Step Solution
- Step 1: Write the proportion equation
228,409.86 : 315,324.99 = 142,395.06 : x - Step 2: Convert to fraction form
228,409.86/315,324.99 = 142,395.06/x - Step 3: Cross multiply
228,409.86x = 315,324.99 × 142,395.06 - Step 4: Simplify right side
228,409.86x = 44,900,720,870.55 - Step 5: Solve for x
x = 44,900,720,870.55/228,409.86 - Step 6: Final answer
x = 196,579.61
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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.