Finding the Fourth Proportional to 257,591.41, 386,498.37 and 139,345.99
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Solution
The fourth proportional to 257,591.41, 386,498.37 and 139,345.99 is: 209,079.17
Step by Step Solution
- Step 1: Write the proportion equation
257,591.41 : 386,498.37 = 139,345.99 : x - Step 2: Convert to fraction form
257,591.41/386,498.37 = 139,345.99/x - Step 3: Cross multiply
257,591.41x = 386,498.37 × 139,345.99 - Step 4: Simplify right side
257,591.41x = 53,856,998,001.04 - Step 5: Solve for x
x = 53,856,998,001.04/257,591.41 - Step 6: Final answer
x = 209,079.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.