Finding the Fourth Proportional to 280,159.74, 386,618.63 and 159,300.99
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Solution
The fourth proportional to 280,159.74, 386,618.63 and 159,300.99 is: 219,834.33
Step by Step Solution
- Step 1: Write the proportion equation
280,159.74 : 386,618.63 = 159,300.99 : x - Step 2: Convert to fraction form
280,159.74/386,618.63 = 159,300.99/x - Step 3: Cross multiply
280,159.74x = 386,618.63 × 159,300.99 - Step 4: Simplify right side
280,159.74x = 61,588,729,714.94 - Step 5: Solve for x
x = 61,588,729,714.94/280,159.74 - Step 6: Final answer
x = 219,834.33
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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.