Finding the Fourth Proportional to 420,022.18, 630,035.55 and 104,479.09
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Solution
The fourth proportional to 420,022.18, 630,035.55 and 104,479.09 is: 156,719.20
Step by Step Solution
- Step 1: Write the proportion equation
420,022.18 : 630,035.55 = 104,479.09 : x - Step 2: Convert to fraction form
420,022.18/630,035.55 = 104,479.09/x - Step 3: Cross multiply
420,022.18x = 630,035.55 × 104,479.09 - Step 4: Simplify right side
420,022.18x = 65,825,540,931.65 - Step 5: Solve for x
x = 65,825,540,931.65/420,022.18 - Step 6: Final answer
x = 156,719.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.