Finding the Fourth Proportional to 260,412.22, 390,649.58 and 91,897.75
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Solution
The fourth proportional to 260,412.22, 390,649.58 and 91,897.75 is: 137,857.65
Step by Step Solution
- Step 1: Write the proportion equation
260,412.22 : 390,649.58 = 91,897.75 : x - Step 2: Convert to fraction form
260,412.22/390,649.58 = 91,897.75/x - Step 3: Cross multiply
260,412.22x = 390,649.58 × 91,897.75 - Step 4: Simplify right side
260,412.22x = 35,899,817,440.45 - Step 5: Solve for x
x = 35,899,817,440.45/260,412.22 - Step 6: Final answer
x = 137,857.65
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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.