Finding the Fourth Proportional to 387,275.79, 580,914.15 and 121,037.70
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Solution
The fourth proportional to 387,275.79, 580,914.15 and 121,037.70 is: 181,556.70
Step by Step Solution
- Step 1: Write the proportion equation
387,275.79 : 580,914.15 = 121,037.70 : x - Step 2: Convert to fraction form
387,275.79/580,914.15 = 121,037.70/x - Step 3: Cross multiply
387,275.79x = 580,914.15 × 121,037.70 - Step 4: Simplify right side
387,275.79x = 70,312,514,337.99 - Step 5: Solve for x
x = 70,312,514,337.99/387,275.79 - Step 6: Final answer
x = 181,556.70
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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.