Finding the Fourth Proportional to 205,398.84, 307,966.36 and 85,538.88
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Solution
The fourth proportional to 205,398.84, 307,966.36 and 85,538.88 is: 128,253.39
Step by Step Solution
- Step 1: Write the proportion equation
205,398.84 : 307,966.36 = 85,538.88 : x - Step 2: Convert to fraction form
205,398.84/307,966.36 = 85,538.88/x - Step 3: Cross multiply
205,398.84x = 307,966.36 × 85,538.88 - Step 4: Simplify right side
205,398.84x = 26,343,097,512.08 - Step 5: Solve for x
x = 26,343,097,512.08/205,398.84 - Step 6: Final answer
x = 128,253.39
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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.