Finding the Fourth Proportional to 260,457.12, 390,711.20 and 133,749.63
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Solution
The fourth proportional to 260,457.12, 390,711.20 and 133,749.63 is: 200,637.55
Step by Step Solution
- Step 1: Write the proportion equation
260,457.12 : 390,711.20 = 133,749.63 : x - Step 2: Convert to fraction form
260,457.12/390,711.20 = 133,749.63/x - Step 3: Cross multiply
260,457.12x = 390,711.20 × 133,749.63 - Step 4: Simplify right side
260,457.12x = 52,257,477,768.11 - Step 5: Solve for x
x = 52,257,477,768.11/260,457.12 - Step 6: Final answer
x = 200,637.55
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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.