Finding the Fourth Proportional to 367,978.13, 551,950.62 and 128,261.06
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Solution
The fourth proportional to 367,978.13, 551,950.62 and 128,261.06 is: 192,385.81
Step by Step Solution
- Step 1: Write the proportion equation
367,978.13 : 551,950.62 = 128,261.06 : x - Step 2: Convert to fraction form
367,978.13/551,950.62 = 128,261.06/x - Step 3: Cross multiply
367,978.13x = 551,950.62 × 128,261.06 - Step 4: Simplify right side
367,978.13x = 70,793,768,829.10 - Step 5: Solve for x
x = 70,793,768,829.10/367,978.13 - Step 6: Final answer
x = 192,385.81
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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.