Finding the Fourth Proportional to 415,497.80, 623,246.70 and 135,043.40
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Solution
The fourth proportional to 415,497.80, 623,246.70 and 135,043.40 is: 202,565.10
Step by Step Solution
- Step 1: Write the proportion equation
415,497.80 : 623,246.70 = 135,043.40 : x - Step 2: Convert to fraction form
415,497.80/623,246.70 = 135,043.40/x - Step 3: Cross multiply
415,497.80x = 623,246.70 × 135,043.40 - Step 4: Simplify right side
415,497.80x = 84,165,353,406.78 - Step 5: Solve for x
x = 84,165,353,406.78/415,497.80 - Step 6: Final answer
x = 202,565.10
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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.