Finding the Fourth Proportional to 260,137.80, 390,206.70 and 73,149.30
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Solution
The fourth proportional to 260,137.80, 390,206.70 and 73,149.30 is: 109,723.95
Step by Step Solution
- Step 1: Write the proportion equation
260,137.80 : 390,206.70 = 73,149.30 : x - Step 2: Convert to fraction form
260,137.80/390,206.70 = 73,149.30/x - Step 3: Cross multiply
260,137.80x = 390,206.70 × 73,149.30 - Step 4: Simplify right side
260,137.80x = 28,543,346,960.31 - Step 5: Solve for x
x = 28,543,346,960.31/260,137.80 - Step 6: Final answer
x = 109,723.95
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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.