Finding the Fourth Proportional to 420,658.74, 630,988.11 and 223,620.66
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Solution
The fourth proportional to 420,658.74, 630,988.11 and 223,620.66 is: 335,430.99
Step by Step Solution
- Step 1: Write the proportion equation
420,658.74 : 630,988.11 = 223,620.66 : x - Step 2: Convert to fraction form
420,658.74/630,988.11 = 223,620.66/x - Step 3: Cross multiply
420,658.74x = 630,988.11 × 223,620.66 - Step 4: Simplify right side
420,658.74x = 141,101,977,610.35 - Step 5: Solve for x
x = 141,101,977,610.35/420,658.74 - Step 6: Final answer
x = 335,430.99
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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.