Finding the Fourth Proportional to 390,257.80, 585,262.14 and 123,955.99
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Solution
The fourth proportional to 390,257.80, 585,262.14 and 123,955.99 is: 185,894.42
Step by Step Solution
- Step 1: Write the proportion equation
390,257.80 : 585,262.14 = 123,955.99 : x - Step 2: Convert to fraction form
390,257.80/585,262.14 = 123,955.99/x - Step 3: Cross multiply
390,257.80x = 585,262.14 × 123,955.99 - Step 4: Simplify right side
390,257.80x = 72,546,747,973.22 - Step 5: Solve for x
x = 72,546,747,973.22/390,257.80 - Step 6: Final answer
x = 185,894.42
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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.