Finding the Fourth Proportional to 288,619.80, 432,929.70 and 131,155.80
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Solution
The fourth proportional to 288,619.80, 432,929.70 and 131,155.80 is: 196,733.70
Step by Step Solution
- Step 1: Write the proportion equation
288,619.80 : 432,929.70 = 131,155.80 : x - Step 2: Convert to fraction form
288,619.80/432,929.70 = 131,155.80/x - Step 3: Cross multiply
288,619.80x = 432,929.70 × 131,155.80 - Step 4: Simplify right side
288,619.80x = 56,781,241,147.26 - Step 5: Solve for x
x = 56,781,241,147.26/288,619.80 - Step 6: Final answer
x = 196,733.70
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1.5x scale
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.