Finding the Fourth Proportional to 280,719.53, 387,393.93 and 153,395.12
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Solution
The fourth proportional to 280,719.53, 387,393.93 and 153,395.12 is: 211,685.80
Step by Step Solution
- Step 1: Write the proportion equation
280,719.53 : 387,393.93 = 153,395.12 : x - Step 2: Convert to fraction form
280,719.53/387,393.93 = 153,395.12/x - Step 3: Cross multiply
280,719.53x = 387,393.93 × 153,395.12 - Step 4: Simplify right side
280,719.53x = 59,424,338,379.62 - Step 5: Solve for x
x = 59,424,338,379.62/280,719.53 - Step 6: Final answer
x = 211,685.80
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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.