Finding the Fourth Proportional to 420,652.99, 630,981.11 and 105,110.20
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Solution
The fourth proportional to 420,652.99, 630,981.11 and 105,110.20 is: 157,665.71
Step by Step Solution
- Step 1: Write the proportion equation
420,652.99 : 630,981.11 = 105,110.20 : x - Step 2: Convert to fraction form
420,652.99/630,981.11 = 105,110.20/x - Step 3: Cross multiply
420,652.99x = 630,981.11 × 105,110.20 - Step 4: Simplify right side
420,652.99x = 66,322,550,668.32 - Step 5: Solve for x
x = 66,322,550,668.32/420,652.99 - Step 6: Final answer
x = 157,665.71
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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.