Finding the Fourth Proportional to 314,953.80, 472,430.70 and 115,207.80
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Solution
The fourth proportional to 314,953.80, 472,430.70 and 115,207.80 is: 172,811.70
Step by Step Solution
- Step 1: Write the proportion equation
314,953.80 : 472,430.70 = 115,207.80 : x - Step 2: Convert to fraction form
314,953.80/472,430.70 = 115,207.80/x - Step 3: Cross multiply
314,953.80x = 472,430.70 × 115,207.80 - Step 4: Simplify right side
314,953.80x = 54,427,701,599.46 - Step 5: Solve for x
x = 54,427,701,599.46/314,953.80 - Step 6: Final answer
x = 172,811.70
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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.