Finding the Fourth Proportional to 353,310.48, 487,407.65 and 209,989.08
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Solution
The fourth proportional to 353,310.48, 487,407.65 and 209,989.08 is: 289,689.35
Step by Step Solution
- Step 1: Write the proportion equation
353,310.48 : 487,407.65 = 209,989.08 : x - Step 2: Convert to fraction form
353,310.48/487,407.65 = 209,989.08/x - Step 3: Cross multiply
353,310.48x = 487,407.65 × 209,989.08 - Step 4: Simplify right side
353,310.48x = 102,350,282,958.52 - Step 5: Solve for x
x = 102,350,282,958.52/353,310.48 - Step 6: Final answer
x = 289,689.35
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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.