Finding the Fourth Proportional to 280,134.13, 420,204.84 and 93,145.63
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Solution
The fourth proportional to 280,134.13, 420,204.84 and 93,145.63 is: 139,719.65
Step by Step Solution
- Step 1: Write the proportion equation
280,134.13 : 420,204.84 = 93,145.63 : x - Step 2: Convert to fraction form
280,134.13/420,204.84 = 93,145.63/x - Step 3: Cross multiply
280,134.13x = 420,204.84 × 93,145.63 - Step 4: Simplify right side
280,134.13x = 39,140,241,984.10 - Step 5: Solve for x
x = 39,140,241,984.10/280,134.13 - Step 6: Final answer
x = 139,719.65
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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.