Finding the Fourth Proportional to 353,199.63, 487,215.99 and 210,005.85
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Solution
The fourth proportional to 353,199.63, 487,215.99 and 210,005.85 is: 289,689.45
Step by Step Solution
- Step 1: Write the proportion equation
353,199.63 : 487,215.99 = 210,005.85 : x - Step 2: Convert to fraction form
353,199.63/487,215.99 = 210,005.85/x - Step 3: Cross multiply
353,199.63x = 487,215.99 × 210,005.85 - Step 4: Simplify right side
353,199.63x = 102,318,208,113.54 - Step 5: Solve for x
x = 102,318,208,113.54/353,199.63 - Step 6: Final answer
x = 289,689.45
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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.