Finding the Fourth Proportional to 319,325.05, 478,987.61 and 129,888.46
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Solution
The fourth proportional to 319,325.05, 478,987.61 and 129,888.46 is: 194,832.70
Step by Step Solution
- Step 1: Write the proportion equation
319,325.05 : 478,987.61 = 129,888.46 : x - Step 2: Convert to fraction form
319,325.05/478,987.61 = 129,888.46/x - Step 3: Cross multiply
319,325.05x = 478,987.61 × 129,888.46 - Step 4: Simplify right side
319,325.05x = 62,214,963,021.98 - Step 5: Solve for x
x = 62,214,963,021.98/319,325.05 - Step 6: Final answer
x = 194,832.70
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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.