Finding the Fourth Proportional to 402,312.96, 555,189.56 and 221,020.96
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Solution
The fourth proportional to 402,312.96, 555,189.56 and 221,020.96 is: 305,007.65
Step by Step Solution
- Step 1: Write the proportion equation
402,312.96 : 555,189.56 = 221,020.96 : x - Step 2: Convert to fraction form
402,312.96/555,189.56 = 221,020.96/x - Step 3: Cross multiply
402,312.96x = 555,189.56 × 221,020.96 - Step 4: Simplify right side
402,312.96x = 122,708,529,533.18 - Step 5: Solve for x
x = 122,708,529,533.18/402,312.96 - Step 6: Final answer
x = 305,007.65
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1.5x scale
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.