Finding the Fourth Proportional to 353,121.60, 528,472.80 and 212,980.80
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Solution
The fourth proportional to 353,121.60, 528,472.80 and 212,980.80 is: 318,741.65
Step by Step Solution
- Step 1: Write the proportion equation
353,121.60 : 528,472.80 = 212,980.80 : x - Step 2: Convert to fraction form
353,121.60/528,472.80 = 212,980.80/x - Step 3: Cross multiply
353,121.60x = 528,472.80 × 212,980.80 - Step 4: Simplify right side
353,121.60x = 112,554,559,722.24 - Step 5: Solve for x
x = 112,554,559,722.24/353,121.60 - Step 6: Final answer
x = 318,741.65
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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.