Finding the Fourth Proportional to 308,237.99, 425,332.55 and 172,272.20
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Solution
The fourth proportional to 308,237.99, 425,332.55 and 172,272.20 is: 237,715.58
Step by Step Solution
- Step 1: Write the proportion equation
308,237.99 : 425,332.55 = 172,272.20 : x - Step 2: Convert to fraction form
308,237.99/425,332.55 = 172,272.20/x - Step 3: Cross multiply
308,237.99x = 425,332.55 × 172,272.20 - Step 4: Simplify right side
308,237.99x = 73,272,972,424.13 - Step 5: Solve for x
x = 73,272,972,424.13/308,237.99 - Step 6: Final answer
x = 237,715.58
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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.