Finding the Fourth Proportional to 320,426,135.70, 480,639,203.55 and 199,493,783.70
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Solution
The fourth proportional to 320,426,135.70, 480,639,203.55 and 199,493,783.70 is: 299,240,675.55
Step by Step Solution
- Step 1: Write the proportion equation
320,426,135.70 : 480,639,203.55 = 199,493,783.70 : x - Step 2: Convert to fraction form
320,426,135.70/480,639,203.55 = 199,493,783.70/x - Step 3: Cross multiply
320,426,135.70x = 480,639,203.55 × 199,493,783.70 - Step 4: Simplify right side
320,426,135.70x = 95,884,533,310,743,968 - Step 5: Solve for x
x = 95,884,533,310,743,968/320,426,135.70 - Step 6: Final answer
x = 299,240,675.55
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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.