Finding the Fourth Proportional to 292,407.21, 438,257.39 and 142,422.75
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Solution
The fourth proportional to 292,407.21, 438,257.39 and 142,422.75 is: 213,461.98
Step by Step Solution
- Step 1: Write the proportion equation
292,407.21 : 438,257.39 = 142,422.75 : x - Step 2: Convert to fraction form
292,407.21/438,257.39 = 142,422.75/x - Step 3: Cross multiply
292,407.21x = 438,257.39 × 142,422.75 - Step 4: Simplify right side
292,407.21x = 62,417,821,979.51 - Step 5: Solve for x
x = 62,417,821,979.51/292,407.21 - Step 6: Final answer
x = 213,461.98
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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.