Finding the Fourth Proportional to 319,323.56, 478,985.36 and 129,886.97
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Solution
The fourth proportional to 319,323.56, 478,985.36 and 129,886.97 is: 194,830.46
Step by Step Solution
- Step 1: Write the proportion equation
319,323.56 : 478,985.36 = 129,886.97 : x - Step 2: Convert to fraction form
319,323.56/478,985.36 = 129,886.97/x - Step 3: Cross multiply
319,323.56x = 478,985.36 × 129,886.97 - Step 4: Simplify right side
319,323.56x = 62,213,954,040.40 - Step 5: Solve for x
x = 62,213,954,040.40/319,323.56 - Step 6: Final answer
x = 194,830.46
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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.