Finding the Fourth Proportional to 221,605.18, 305,802.63 and 130,969.60
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Solution
The fourth proportional to 221,605.18, 305,802.63 and 130,969.60 is: 180,730.65
Step by Step Solution
- Step 1: Write the proportion equation
221,605.18 : 305,802.63 = 130,969.60 : x - Step 2: Convert to fraction form
221,605.18/305,802.63 = 130,969.60/x - Step 3: Cross multiply
221,605.18x = 305,802.63 × 130,969.60 - Step 4: Simplify right side
221,605.18x = 40,050,848,130.05 - Step 5: Solve for x
x = 40,050,848,130.05/221,605.18 - Step 6: Final answer
x = 180,730.65
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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.