Finding the Fourth Proportional to 389,235.56, 537,021.42 and 228,039.08
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Solution
The fourth proportional to 389,235.56, 537,021.42 and 228,039.08 is: 314,621.48
Step by Step Solution
- Step 1: Write the proportion equation
389,235.56 : 537,021.42 = 228,039.08 : x - Step 2: Convert to fraction form
389,235.56/537,021.42 = 228,039.08/x - Step 3: Cross multiply
389,235.56x = 537,021.42 × 228,039.08 - Step 4: Simplify right side
389,235.56x = 122,461,867,871.99 - Step 5: Solve for x
x = 122,461,867,871.99/389,235.56 - Step 6: Final answer
x = 314,621.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.