Finding the Fourth Proportional to 239,793.70, 330,913.68 and 130,897.60
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Solution
The fourth proportional to 239,793.70, 330,913.68 and 130,897.60 is: 180,637.80
Step by Step Solution
- Step 1: Write the proportion equation
239,793.70 : 330,913.68 = 130,897.60 : x - Step 2: Convert to fraction form
239,793.70/330,913.68 = 130,897.60/x - Step 3: Cross multiply
239,793.70x = 330,913.68 × 130,897.60 - Step 4: Simplify right side
239,793.70x = 43,315,806,519.17 - Step 5: Solve for x
x = 43,315,806,519.17/239,793.70 - Step 6: Final answer
x = 180,637.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.