Finding the Fourth Proportional to 389,281.98, 537,209.92 and 210,433.98
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Solution
The fourth proportional to 389,281.98, 537,209.92 and 210,433.98 is: 290,399.32
Step by Step Solution
- Step 1: Write the proportion equation
389,281.98 : 537,209.92 = 210,433.98 : x - Step 2: Convert to fraction form
389,281.98/537,209.92 = 210,433.98/x - Step 3: Cross multiply
389,281.98x = 537,209.92 × 210,433.98 - Step 4: Simplify right side
389,281.98x = 113,047,221,561.08 - Step 5: Solve for x
x = 113,047,221,561.08/389,281.98 - Step 6: Final answer
x = 290,399.32
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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.