Finding the Fourth Proportional to 280,389.36, 420,808.14 and 147,348.48
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Solution
The fourth proportional to 280,389.36, 420,808.14 and 147,348.48 is: 221,140.49
Step by Step Solution
- Step 1: Write the proportion equation
280,389.36 : 420,808.14 = 147,348.48 : x - Step 2: Convert to fraction form
280,389.36/420,808.14 = 147,348.48/x - Step 3: Cross multiply
280,389.36x = 420,808.14 × 147,348.48 - Step 4: Simplify right side
280,389.36x = 62,005,439,800.63 - Step 5: Solve for x
x = 62,005,439,800.63/280,389.36 - Step 6: Final answer
x = 221,140.49
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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.