Finding the Fourth Proportional to 498,649.56, 688,138.92 and 272,295.08
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Solution
The fourth proportional to 498,649.56, 688,138.92 and 272,295.08 is: 375,768.59
Step by Step Solution
- Step 1: Write the proportion equation
498,649.56 : 688,138.92 = 272,295.08 : x - Step 2: Convert to fraction form
498,649.56/688,138.92 = 272,295.08/x - Step 3: Cross multiply
498,649.56x = 688,138.92 × 272,295.08 - Step 4: Simplify right side
498,649.56x = 187,376,842,272.51 - Step 5: Solve for x
x = 187,376,842,272.51/498,649.56 - Step 6: Final answer
x = 375,768.59
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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.