Finding the Fourth Proportional to 420,449.76, 630,299.61 and 154,148.13
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Solution
The fourth proportional to 420,449.76, 630,299.61 and 154,148.13 is: 231,084.70
Step by Step Solution
- Step 1: Write the proportion equation
420,449.76 : 630,299.61 = 154,148.13 : x - Step 2: Convert to fraction form
420,449.76/630,299.61 = 154,148.13/x - Step 3: Cross multiply
420,449.76x = 630,299.61 × 154,148.13 - Step 4: Simplify right side
420,449.76x = 97,159,506,221.23 - Step 5: Solve for x
x = 97,159,506,221.23/420,449.76 - Step 6: Final answer
x = 231,084.70
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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.