Finding the Fourth Proportional to 315,212.80, 434,977.68 and 171,971.68
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Solution
The fourth proportional to 315,212.80, 434,977.68 and 171,971.68 is: 237,312.20
Step by Step Solution
- Step 1: Write the proportion equation
315,212.80 : 434,977.68 = 171,971.68 : x - Step 2: Convert to fraction form
315,212.80/434,977.68 = 171,971.68/x - Step 3: Cross multiply
315,212.80x = 434,977.68 × 171,971.68 - Step 4: Simplify right side
315,212.80x = 74,803,842,392.10 - Step 5: Solve for x
x = 74,803,842,392.10/315,212.80 - Step 6: Final answer
x = 237,312.20
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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.