Finding the Fourth Proportional to 420,177.09, 630,169.63 and 120,655.29
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Solution
The fourth proportional to 420,177.09, 630,169.63 and 120,655.29 is: 180,955.37
Step by Step Solution
- Step 1: Write the proportion equation
420,177.09 : 630,169.63 = 120,655.29 : x - Step 2: Convert to fraction form
420,177.09/630,169.63 = 120,655.29/x - Step 3: Cross multiply
420,177.09x = 630,169.63 × 120,655.29 - Step 4: Simplify right side
420,177.09x = 76,033,299,456.84 - Step 5: Solve for x
x = 76,033,299,456.84/420,177.09 - Step 6: Final answer
x = 180,955.37
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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.