Finding the Fourth Proportional to 420,189.36, 630,284.04 and 153,841.92
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Solution
The fourth proportional to 420,189.36, 630,284.04 and 153,841.92 is: 230,762.88
Step by Step Solution
- Step 1: Write the proportion equation
420,189.36 : 630,284.04 = 153,841.92 : x - Step 2: Convert to fraction form
420,189.36/630,284.04 = 153,841.92/x - Step 3: Cross multiply
420,189.36x = 630,284.04 × 153,841.92 - Step 4: Simplify right side
420,189.36x = 96,964,106,858.96 - Step 5: Solve for x
x = 96,964,106,858.96/420,189.36 - Step 6: Final answer
x = 230,762.88
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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.