Finding the Fourth Proportional to 319,485.20, 479,227.80 and 97,869.20
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Solution
The fourth proportional to 319,485.20, 479,227.80 and 97,869.20 is: 146,803.80
Step by Step Solution
- Step 1: Write the proportion equation
319,485.20 : 479,227.80 = 97,869.20 : x - Step 2: Convert to fraction form
319,485.20/479,227.80 = 97,869.20/x - Step 3: Cross multiply
319,485.20x = 479,227.80 × 97,869.20 - Step 4: Simplify right side
319,485.20x = 46,901,641,403.76 - Step 5: Solve for x
x = 46,901,641,403.76/319,485.20 - Step 6: Final answer
x = 146,803.80
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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.