Finding the Fourth Proportional to 221,442.93, 305,485.99 and 130,738.13
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Solution
The fourth proportional to 221,442.93, 305,485.99 and 130,738.13 is: 180,356.48
Step by Step Solution
- Step 1: Write the proportion equation
221,442.93 : 305,485.99 = 130,738.13 : x - Step 2: Convert to fraction form
221,442.93/305,485.99 = 130,738.13/x - Step 3: Cross multiply
221,442.93x = 305,485.99 × 130,738.13 - Step 4: Simplify right side
221,442.93x = 39,938,667,073.80 - Step 5: Solve for x
x = 39,938,667,073.80/221,442.93 - Step 6: Final answer
x = 180,356.48
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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.