Finding the Fourth Proportional to 398,236.18, 549,563.78 and 216,947.68
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Solution
The fourth proportional to 398,236.18, 549,563.78 and 216,947.68 is: 299,386.63
Step by Step Solution
- Step 1: Write the proportion equation
398,236.18 : 549,563.78 = 216,947.68 : x - Step 2: Convert to fraction form
398,236.18/549,563.78 = 216,947.68/x - Step 3: Cross multiply
398,236.18x = 549,563.78 × 216,947.68 - Step 4: Simplify right side
398,236.18x = 119,226,587,083.03 - Step 5: Solve for x
x = 119,226,587,083.03/398,236.18 - Step 6: Final answer
x = 299,386.63
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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.