Finding the Fourth Proportional to 398,133.09, 549,420.84 and 216,844.46
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Solution
The fourth proportional to 398,133.09, 549,420.84 and 216,844.46 is: 299,243.81
Step by Step Solution
- Step 1: Write the proportion equation
398,133.09 : 549,420.84 = 216,844.46 : x - Step 2: Convert to fraction form
398,133.09/549,420.84 = 216,844.46/x - Step 3: Cross multiply
398,133.09x = 549,420.84 × 216,844.46 - Step 4: Simplify right side
398,133.09x = 119,138,864,675.77 - Step 5: Solve for x
x = 119,138,864,675.77/398,133.09 - Step 6: Final answer
x = 299,243.81
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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.