Finding the Fourth Proportional to 398,130.12, 549,419.58 and 219,282.12
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Solution
The fourth proportional to 398,130.12, 549,419.58 and 219,282.12 is: 302,609.33
Step by Step Solution
- Step 1: Write the proportion equation
398,130.12 : 549,419.58 = 219,282.12 : x - Step 2: Convert to fraction form
398,130.12/549,419.58 = 219,282.12/x - Step 3: Cross multiply
398,130.12x = 549,419.58 × 219,282.12 - Step 4: Simplify right side
398,130.12x = 120,477,890,271.91 - Step 5: Solve for x
x = 120,477,890,271.91/398,130.12 - Step 6: Final answer
x = 302,609.33
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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.