Finding the Fourth Proportional to 354,931.86, 531,859.08 and 260,225.09
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Solution
The fourth proportional to 354,931.86, 531,859.08 and 260,225.09 is: 389,942.67
Step by Step Solution
- Step 1: Write the proportion equation
354,931.86 : 531,859.08 = 260,225.09 : x - Step 2: Convert to fraction form
354,931.86/531,859.08 = 260,225.09/x - Step 3: Cross multiply
354,931.86x = 531,859.08 × 260,225.09 - Step 4: Simplify right side
354,931.86x = 138,403,074,301.02 - Step 5: Solve for x
x = 138,403,074,301.02/354,931.86 - Step 6: Final answer
x = 389,942.67
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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.