Finding the Fourth Proportional to 280,611.19, 387,228.93 and 153,262.18
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Solution
The fourth proportional to 280,611.19, 387,228.93 and 153,262.18 is: 211,493.88
Step by Step Solution
- Step 1: Write the proportion equation
280,611.19 : 387,228.93 = 153,262.18 : x - Step 2: Convert to fraction form
280,611.19/387,228.93 = 153,262.18/x - Step 3: Cross multiply
280,611.19x = 387,228.93 × 153,262.18 - Step 4: Simplify right side
280,611.19x = 59,347,549,970.87 - Step 5: Solve for x
x = 59,347,549,970.87/280,611.19 - Step 6: Final answer
x = 211,493.88
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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.