Finding the Fourth Proportional to 387,701.12, 535,052.04 and 217,946.18
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Solution
The fourth proportional to 387,701.12, 535,052.04 and 217,946.18 is: 300,779.50
Step by Step Solution
- Step 1: Write the proportion equation
387,701.12 : 535,052.04 = 217,946.18 : x - Step 2: Convert to fraction form
387,701.12/535,052.04 = 217,946.18/x - Step 3: Cross multiply
387,701.12x = 535,052.04 × 217,946.18 - Step 4: Simplify right side
387,701.12x = 116,612,548,219.21 - Step 5: Solve for x
x = 116,612,548,219.21/387,701.12 - Step 6: Final answer
x = 300,779.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.