Finding the Fourth Proportional to 319,313.77, 478,970.65 and 129,877.19
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Solution
The fourth proportional to 319,313.77, 478,970.65 and 129,877.19 is: 194,815.79
Step by Step Solution
- Step 1: Write the proportion equation
319,313.77 : 478,970.65 = 129,877.19 : x - Step 2: Convert to fraction form
319,313.77/478,970.65 = 129,877.19/x - Step 3: Cross multiply
319,313.77x = 478,970.65 × 129,877.19 - Step 4: Simplify right side
319,313.77x = 62,207,362,987.21 - Step 5: Solve for x
x = 62,207,362,987.21/319,313.77 - Step 6: Final answer
x = 194,815.79
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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.