Finding the Fourth Proportional to 305,281.19, 420,802.74 and 240,645.62
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Solution
The fourth proportional to 305,281.19, 420,802.74 and 240,645.62 is: 331,708.40
Step by Step Solution
- Step 1: Write the proportion equation
305,281.19 : 420,802.74 = 240,645.62 : x - Step 2: Convert to fraction form
305,281.19/420,802.74 = 240,645.62/x - Step 3: Cross multiply
305,281.19x = 420,802.74 × 240,645.62 - Step 4: Simplify right side
305,281.19x = 101,264,334,160.99 - Step 5: Solve for x
x = 101,264,334,160.99/305,281.19 - Step 6: Final answer
x = 331,708.40
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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.