Finding the Fourth Proportional to 415,497.40, 623,246.10 and 257,903.80
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Solution
The fourth proportional to 415,497.40, 623,246.10 and 257,903.80 is: 386,855.70
Step by Step Solution
- Step 1: Write the proportion equation
415,497.40 : 623,246.10 = 257,903.80 : x - Step 2: Convert to fraction form
415,497.40/623,246.10 = 257,903.80/x - Step 3: Cross multiply
415,497.40x = 623,246.10 × 257,903.80 - Step 4: Simplify right side
415,497.40x = 160,737,537,525.18 - Step 5: Solve for x
x = 160,737,537,525.18/415,497.40 - Step 6: Final answer
x = 386,855.70
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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.