Finding the Fourth Proportional to 397,980.75, 549,207.95 and 216,692.68
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Solution
The fourth proportional to 397,980.75, 549,207.95 and 216,692.68 is: 299,032.91
Step by Step Solution
- Step 1: Write the proportion equation
397,980.75 : 549,207.95 = 216,692.68 : x - Step 2: Convert to fraction form
397,980.75/549,207.95 = 216,692.68/x - Step 3: Cross multiply
397,980.75x = 549,207.95 × 216,692.68 - Step 4: Simplify right side
397,980.75x = 119,009,342,562.81 - Step 5: Solve for x
x = 119,009,342,562.81/397,980.75 - Step 6: Final answer
x = 299,032.91
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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.