Finding the Fourth Proportional to 318,934.40, 478,228.80 and 131,964.80
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Solution
The fourth proportional to 318,934.40, 478,228.80 and 131,964.80 is: 197,875.70
Step by Step Solution
- Step 1: Write the proportion equation
318,934.40 : 478,228.80 = 131,964.80 : x - Step 2: Convert to fraction form
318,934.40/478,228.80 = 131,964.80/x - Step 3: Cross multiply
318,934.40x = 478,228.80 × 131,964.80 - Step 4: Simplify right side
318,934.40x = 63,109,367,946.24 - Step 5: Solve for x
x = 63,109,367,946.24/318,934.40 - Step 6: Final answer
x = 197,875.70
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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.