Finding the Fourth Proportional to 219,323.10, 328,984.65 and 86,207.70
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Solution
The fourth proportional to 219,323.10, 328,984.65 and 86,207.70 is: 129,311.55
Step by Step Solution
- Step 1: Write the proportion equation
219,323.10 : 328,984.65 = 86,207.70 : x - Step 2: Convert to fraction form
219,323.10/328,984.65 = 86,207.70/x - Step 3: Cross multiply
219,323.10x = 328,984.65 × 86,207.70 - Step 4: Simplify right side
219,323.10x = 28,361,010,011.81 - Step 5: Solve for x
x = 28,361,010,011.81/219,323.10 - Step 6: Final answer
x = 129,311.55
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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.