Finding the Fourth Proportional to 398,028.80, 549,373.44 and 247,239.68
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Solution
The fourth proportional to 398,028.80, 549,373.44 and 247,239.68 is: 341,248.96
Step by Step Solution
- Step 1: Write the proportion equation
398,028.80 : 549,373.44 = 247,239.68 : x - Step 2: Convert to fraction form
398,028.80/549,373.44 = 247,239.68/x - Step 3: Cross multiply
398,028.80x = 549,373.44 × 247,239.68 - Step 4: Simplify right side
398,028.80x = 135,826,913,506.10 - Step 5: Solve for x
x = 135,826,913,506.10/398,028.80 - Step 6: Final answer
x = 341,248.96
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1.5x scale
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.