Finding the Fourth Proportional to 539,993.80, 809,990.70 and 160,913.80
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Solution
The fourth proportional to 539,993.80, 809,990.70 and 160,913.80 is: 241,370.70
Step by Step Solution
- Step 1: Write the proportion equation
539,993.80 : 809,990.70 = 160,913.80 : x - Step 2: Convert to fraction form
539,993.80/809,990.70 = 160,913.80/x - Step 3: Cross multiply
539,993.80x = 809,990.70 × 160,913.80 - Step 4: Simplify right side
539,993.80x = 130,338,681,501.66 - Step 5: Solve for x
x = 130,338,681,501.66/539,993.80 - Step 6: Final answer
x = 241,370.70
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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.