Finding the Fourth Proportional to 280,272.21, 386,783.87 and 152,955.99
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Solution
The fourth proportional to 280,272.21, 386,783.87 and 152,955.99 is: 211,083.75
Step by Step Solution
- Step 1: Write the proportion equation
280,272.21 : 386,783.87 = 152,955.99 : x - Step 2: Convert to fraction form
280,272.21/386,783.87 = 152,955.99/x - Step 3: Cross multiply
280,272.21x = 386,783.87 × 152,955.99 - Step 4: Simplify right side
280,272.21x = 59,160,908,987.10 - Step 5: Solve for x
x = 59,160,908,987.10/280,272.21 - Step 6: Final answer
x = 211,083.75
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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.