Finding the Fourth Proportional to 386,319.80, 579,479.70 and 268,221.80
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Solution
The fourth proportional to 386,319.80, 579,479.70 and 268,221.80 is: 402,332.70
Step by Step Solution
- Step 1: Write the proportion equation
386,319.80 : 579,479.70 = 268,221.80 : x - Step 2: Convert to fraction form
386,319.80/579,479.70 = 268,221.80/x - Step 3: Cross multiply
386,319.80x = 579,479.70 × 268,221.80 - Step 4: Simplify right side
386,319.80x = 155,429,088,197.46 - Step 5: Solve for x
x = 155,429,088,197.46/386,319.80 - Step 6: Final answer
x = 402,332.70
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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.