Finding the Fourth Proportional to 280,699.84, 387,365.88 and 151,638.36
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Solution
The fourth proportional to 280,699.84, 387,365.88 and 151,638.36 is: 209,260.99
Step by Step Solution
- Step 1: Write the proportion equation
280,699.84 : 387,365.88 = 151,638.36 : x - Step 2: Convert to fraction form
280,699.84/387,365.88 = 151,638.36/x - Step 3: Cross multiply
280,699.84x = 387,365.88 × 151,638.36 - Step 4: Simplify right side
280,699.84x = 58,739,526,763.16 - Step 5: Solve for x
x = 58,739,526,763.16/280,699.84 - Step 6: Final answer
x = 209,260.99
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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.