Finding the Fourth Proportional to 420,437.57, 630,281.36 and 154,135.99
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Solution
The fourth proportional to 420,437.57, 630,281.36 and 154,135.99 is: 231,066.51
Step by Step Solution
- Step 1: Write the proportion equation
420,437.57 : 630,281.36 = 154,135.99 : x - Step 2: Convert to fraction form
420,437.57/630,281.36 = 154,135.99/x - Step 3: Cross multiply
420,437.57x = 630,281.36 × 154,135.99 - Step 4: Simplify right side
420,437.57x = 97,149,040,211.78 - Step 5: Solve for x
x = 97,149,040,211.78/420,437.57 - Step 6: Final answer
x = 231,066.51
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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.