Finding the Fourth Proportional to 359,405,685.12, 495,979,942.08 and 202,805,980.80
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Solution
The fourth proportional to 359,405,685.12, 495,979,942.08 and 202,805,980.80 is: 279,872,308.02
Step by Step Solution
- Step 1: Write the proportion equation
359,405,685.12 : 495,979,942.08 = 202,805,980.80 : x - Step 2: Convert to fraction form
359,405,685.12/495,979,942.08 = 202,805,980.80/x - Step 3: Cross multiply
359,405,685.12x = 495,979,942.08 × 202,805,980.80 - Step 4: Simplify right side
359,405,685.12x = 100,587,698,610,661,600 - Step 5: Solve for x
x = 100,587,698,610,661,600/359,405,685.12 - Step 6: Final answer
x = 279,872,308.02
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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.