Finding the Fourth Proportional to 389,624.16, 537,589.98 and 236,658.09
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Solution
The fourth proportional to 389,624.16, 537,589.98 and 236,658.09 is: 326,532.67
Step by Step Solution
- Step 1: Write the proportion equation
389,624.16 : 537,589.98 = 236,658.09 : x - Step 2: Convert to fraction form
389,624.16/537,589.98 = 236,658.09/x - Step 3: Cross multiply
389,624.16x = 537,589.98 × 236,658.09 - Step 4: Simplify right side
389,624.16x = 127,225,017,869.94 - Step 5: Solve for x
x = 127,225,017,869.94/389,624.16 - Step 6: Final answer
x = 326,532.67
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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.