Finding the Fourth Proportional to 387,967.68, 581,307.84 and 135,114.48
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Solution
The fourth proportional to 387,967.68, 581,307.84 and 135,114.48 is: 202,447.55
Step by Step Solution
- Step 1: Write the proportion equation
387,967.68 : 581,307.84 = 135,114.48 : x - Step 2: Convert to fraction form
387,967.68/581,307.84 = 135,114.48/x - Step 3: Cross multiply
387,967.68x = 581,307.84 × 135,114.48 - Step 4: Simplify right side
387,967.68x = 78,543,106,521.52 - Step 5: Solve for x
x = 78,543,106,521.52/387,967.68 - Step 6: Final answer
x = 202,447.55
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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.