Finding the Fourth Proportional to 260,125.68, 390,219.78 and 91,611.20
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Solution
The fourth proportional to 260,125.68, 390,219.78 and 91,611.20 is: 137,427.80
Step by Step Solution
- Step 1: Write the proportion equation
260,125.68 : 390,219.78 = 91,611.20 : x - Step 2: Convert to fraction form
260,125.68/390,219.78 = 91,611.20/x - Step 3: Cross multiply
260,125.68x = 390,219.78 × 91,611.20 - Step 4: Simplify right side
260,125.68x = 35,748,500,358.44 - Step 5: Solve for x
x = 35,748,500,358.44/260,125.68 - Step 6: Final answer
x = 137,427.80
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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.