Finding the Fourth Proportional to 387,158.69, 534,726.06 and 257,884.21
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Solution
The fourth proportional to 387,158.69, 534,726.06 and 257,884.21 is: 356,177.99
Step by Step Solution
- Step 1: Write the proportion equation
387,158.69 : 534,726.06 = 257,884.21 : x - Step 2: Convert to fraction form
387,158.69/534,726.06 = 257,884.21/x - Step 3: Cross multiply
387,158.69x = 534,726.06 × 257,884.21 - Step 4: Simplify right side
387,158.69x = 137,897,404,243.02 - Step 5: Solve for x
x = 137,897,404,243.02/387,158.69 - Step 6: Final answer
x = 356,177.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.