Finding the Fourth Proportional to 316,688.20, 437,032.80 and 189,363.80
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Solution
The fourth proportional to 316,688.20, 437,032.80 and 189,363.80 is: 261,323.88
Step by Step Solution
- Step 1: Write the proportion equation
316,688.20 : 437,032.80 = 189,363.80 : x - Step 2: Convert to fraction form
316,688.20/437,032.80 = 189,363.80/x - Step 3: Cross multiply
316,688.20x = 437,032.80 × 189,363.80 - Step 4: Simplify right side
316,688.20x = 82,758,190,366.91 - Step 5: Solve for x
x = 82,758,190,366.91/316,688.20 - Step 6: Final answer
x = 261,323.88
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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.