Finding the Fourth Proportional to 280,935.81, 387,693.14 and 153,611.91
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Solution
The fourth proportional to 280,935.81, 387,693.14 and 153,611.91 is: 211,985.37
Step by Step Solution
- Step 1: Write the proportion equation
280,935.81 : 387,693.14 = 153,611.91 : x - Step 2: Convert to fraction form
280,935.81/387,693.14 = 153,611.91/x - Step 3: Cross multiply
280,935.81x = 387,693.14 × 153,611.91 - Step 4: Simplify right side
280,935.81x = 59,554,282,961.24 - Step 5: Solve for x
x = 59,554,282,961.24/280,935.81 - Step 6: Final answer
x = 211,985.37
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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.