Finding the Fourth Proportional to 239,780.91, 330,905.70 and 130,891.71
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Solution
The fourth proportional to 239,780.91, 330,905.70 and 130,891.71 is: 180,634.95
Step by Step Solution
- Step 1: Write the proportion equation
239,780.91 : 330,905.70 = 130,891.71 : x - Step 2: Convert to fraction form
239,780.91/330,905.70 = 130,891.71/x - Step 3: Cross multiply
239,780.91x = 330,905.70 × 130,891.71 - Step 4: Simplify right side
239,780.91x = 43,312,812,921.75 - Step 5: Solve for x
x = 43,312,812,921.75/239,780.91 - Step 6: Final answer
x = 180,634.95
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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.