Finding the Fourth Proportional to 249,043.19, 343,678.84 and 135,865.13
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Solution
The fourth proportional to 249,043.19, 343,678.84 and 135,865.13 is: 187,493.46
Step by Step Solution
- Step 1: Write the proportion equation
249,043.19 : 343,678.84 = 135,865.13 : x - Step 2: Convert to fraction form
249,043.19/343,678.84 = 135,865.13/x - Step 3: Cross multiply
249,043.19x = 343,678.84 × 135,865.13 - Step 4: Simplify right side
249,043.19x = 46,693,968,216.79 - Step 5: Solve for x
x = 46,693,968,216.79/249,043.19 - Step 6: Final answer
x = 187,493.46
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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.