Finding the Fourth Proportional to 280,352.18, 386,871.36 and 153,003.08
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Solution
The fourth proportional to 280,352.18, 386,871.36 and 153,003.08 is: 211,136.26
Step by Step Solution
- Step 1: Write the proportion equation
280,352.18 : 386,871.36 = 153,003.08 : x - Step 2: Convert to fraction form
280,352.18/386,871.36 = 153,003.08/x - Step 3: Cross multiply
280,352.18x = 386,871.36 × 153,003.08 - Step 4: Simplify right side
280,352.18x = 59,192,509,643.79 - Step 5: Solve for x
x = 59,192,509,643.79/280,352.18 - Step 6: Final answer
x = 211,136.26
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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.