Finding the Fourth Proportional to 319,115.80, 478,673.70 and 303,563.80
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Solution
The fourth proportional to 319,115.80, 478,673.70 and 303,563.80 is: 455,345.70
Step by Step Solution
- Step 1: Write the proportion equation
319,115.80 : 478,673.70 = 303,563.80 : x - Step 2: Convert to fraction form
319,115.80/478,673.70 = 303,563.80/x - Step 3: Cross multiply
319,115.80x = 478,673.70 × 303,563.80 - Step 4: Simplify right side
319,115.80x = 145,308,007,332.06 - Step 5: Solve for x
x = 145,308,007,332.06/319,115.80 - Step 6: Final answer
x = 455,345.70
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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.