Finding the Fourth Proportional to 387,291.20, 580,937.24 and 121,053.12
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Solution
The fourth proportional to 387,291.20, 580,937.24 and 121,053.12 is: 181,579.82
Step by Step Solution
- Step 1: Write the proportion equation
387,291.20 : 580,937.24 = 121,053.12 : x - Step 2: Convert to fraction form
387,291.20/580,937.24 = 121,053.12/x - Step 3: Cross multiply
387,291.20x = 580,937.24 × 121,053.12 - Step 4: Simplify right side
387,291.20x = 70,324,265,426.19 - Step 5: Solve for x
x = 70,324,265,426.19/387,291.20 - Step 6: Final answer
x = 181,579.82
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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.