Finding the Fourth Proportional to 221,322.26, 305,355.48 and 130,710.30
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Solution
The fourth proportional to 221,322.26, 305,355.48 and 130,710.30 is: 180,339.32
Step by Step Solution
- Step 1: Write the proportion equation
221,322.26 : 305,355.48 = 130,710.30 : x - Step 2: Convert to fraction form
221,322.26/305,355.48 = 130,710.30/x - Step 3: Cross multiply
221,322.26x = 305,355.48 × 130,710.30 - Step 4: Simplify right side
221,322.26x = 39,913,106,397.44 - Step 5: Solve for x
x = 39,913,106,397.44/221,322.26 - Step 6: Final answer
x = 180,339.32
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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.