Finding the Fourth Proportional to 420,436.31, 630,279.36 and 154,134.63
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Solution
The fourth proportional to 420,436.31, 630,279.36 and 154,134.63 is: 231,064.43
Step by Step Solution
- Step 1: Write the proportion equation
420,436.31 : 630,279.36 = 154,134.63 : x - Step 2: Convert to fraction form
420,436.31/630,279.36 = 154,134.63/x - Step 3: Cross multiply
420,436.31x = 630,279.36 × 154,134.63 - Step 4: Simplify right side
420,436.31x = 97,147,875,950.24 - Step 5: Solve for x
x = 97,147,875,950.24/420,436.31 - Step 6: Final answer
x = 231,064.43
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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.