Finding the Fourth Proportional to 280,230.99, 386,727.29 and 159,389.65
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Solution
The fourth proportional to 280,230.99, 386,727.29 and 159,389.65 is: 219,962.57
Step by Step Solution
- Step 1: Write the proportion equation
280,230.99 : 386,727.29 = 159,389.65 : x - Step 2: Convert to fraction form
280,230.99/386,727.29 = 159,389.65/x - Step 3: Cross multiply
280,230.99x = 386,727.29 × 159,389.65 - Step 4: Simplify right side
280,230.99x = 61,640,327,398.55 - Step 5: Solve for x
x = 61,640,327,398.55/280,230.99 - Step 6: Final answer
x = 219,962.57
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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.