Finding the Fourth Proportional to 299,875.80, 449,813.70 and 78,259.80
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Solution
The fourth proportional to 299,875.80, 449,813.70 and 78,259.80 is: 117,389.70
Step by Step Solution
- Step 1: Write the proportion equation
299,875.80 : 449,813.70 = 78,259.80 : x - Step 2: Convert to fraction form
299,875.80/449,813.70 = 78,259.80/x - Step 3: Cross multiply
299,875.80x = 449,813.70 × 78,259.80 - Step 4: Simplify right side
299,875.80x = 35,202,330,199.26 - Step 5: Solve for x
x = 35,202,330,199.26/299,875.80 - Step 6: Final answer
x = 117,389.70
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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.