Finding the Fourth Proportional to 266,130.40, 399,195.60 and 139,721.80
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Solution
The fourth proportional to 266,130.40, 399,195.60 and 139,721.80 is: 209,582.70
Step by Step Solution
- Step 1: Write the proportion equation
266,130.40 : 399,195.60 = 139,721.80 : x - Step 2: Convert to fraction form
266,130.40/399,195.60 = 139,721.80/x - Step 3: Cross multiply
266,130.40x = 399,195.60 × 139,721.80 - Step 4: Simplify right side
266,130.40x = 55,776,327,784.08 - Step 5: Solve for x
x = 55,776,327,784.08/266,130.40 - Step 6: Final answer
x = 209,582.70
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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.